When Attraction Hijacks Your Dopamine: People as Hyperfixations

Hyperfixation is a fairly common experience for those of us with ADHD, and it can also show up for people with autism—especially when ADHD and autism overlap. It usually starts innocently enough. We find something new and interesting, our brain releases dopamine, and suddenly that thing feels exciting, energizing, and alive.

We want more of it.

Hyperfixation can be genuinely joyful. It can spark creativity, produce a flow state, and give a sense of purpose or momentum. The challenge with ADHD is that the brain doesn’t always know when to stop. A little feels good, so more feels better, and eventually as much as possible feels necessary. That’s part of what makes ADHD brains more vulnerable to addiction and compulsive behaviors.

But what happens when the object of the hyperfixation isn’t a hobby, topic, or substance—but another human being?

That’s where things can get especially complicated.

When the Hyperfixation Is a Person

Hyperfixation on a person can be:

• Platonic

• Romantic

• Sexual

• Or some confusing combination of all three

The intensity alone can make it incredibly difficult to tell the difference—especially when the person is someone you could plausibly be attracted to romantically or sexually. How this plays out depends on the other person’s feelings, the boundaries involved, and the impact on your existing relationships.

There are a few common patterns I see.

Scenario One: Limerence and the Unknown

One of the most common scenarios today is limerence, where the other person’s feelings are unknown or not reciprocated. Modern life makes this easier than ever—we can develop intense attraction to people who don’t actually know us, whether that’s someone online, a public figure, or someone we only interact with superficially.

This kind of hyperfixation can quietly devastate mental health.

When feelings are uncertain or unreturned, the brain stays hooked on possibility. That uncertainty fuels obsessive thinking, emotional highs and lows, and intense rejection sensitive dysphoria—a crushing sense of rejection that can spiral into despair or depression.

As long as the outcome is unclear, the cycle can continue:

• Obsessive interest

• Emotional hope

• Perceived rejection

• Emotional collapse

• Repeat

If left unchecked, this can lead to unhealthy time and money investment in parasocial relationships—or, in extreme cases, boundary violations like stalking. When addressed early, though, people can grieve the fantasy, regulate the dopamine loop, and move toward healthier forms of connection.

Scenario Two: Mutual Attraction, Uneven Intensity

Another scenario occurs when attraction is mutual—but the hyperfixation is one‑sided.

This can look a lot like love‑bombing from the outside:

• Excessive gift‑giving

• Wanting to spend every possible moment together

• Intense distress when apart

• Over‑prioritizing the other person

The key difference from abusive love‑bombing is intent. There’s no manipulation or hidden agenda—just an unsustainable level of focus driven by dopamine. The person hyperfixating often neglects their own needs, routines, and relationships in the process.

If noticed early, this can settle into a healthy relationship. If not, it often ends with a painful emotional crash once the hyperfixation fades.

Scenario Three: Mutual Hyperfixation

Sometimes, both people hyperfixate on each other.

This can feel intoxicating. There’s often rapid bonding, deep conversations, oversharing, and a sense of “I’ve never connected like this before.” The connection feels deep—but it isn’t very wide. When the dopamine drops, the relationship can feel suddenly fragile or disorienting.

With intention, pacing, and boundaries, mutual hyperfixation can evolve into a deep friendship or romantic partnership. Without those things, it can burn bright and collapse just as fast.

When You’re Already in Another Relationship

Things get even more complicated when someone develops a hyperfixation while already in a romantic relationship or close friendship.

This is especially likely when the existing relationship isn’t meeting certain needs. A new person appears, the connection feels effortless, dopamine spikes, and suddenly unmet needs—or unresolved emotional wounds—start getting attention.

Energy and focus slowly shift. Other relationships begin to suffer. And while hyperfixation eventually fades, the damage left behind may not.

How to Tell If You’re Hyperfixating on a Person

You might be hyperfixating if:

• Your emotional state revolves around communication with one specific person

• You constantly worry about how they see you

• You neglect responsibilities or other relationships

• You’re overly attached to your phone waiting for messages

• You ignore your own needs because of the focus on them

Awareness is the first—and most important—step.

What Helps

Set boundaries with yourself. Decide how much time and emotional energy you want this relationship to have. Identify lines you don’t want to cross—topics, behaviors, or situations that blur boundaries.

Redirect energy intentionally. Re‑invest in hobbies, self‑care, and existing relationships. Dopamine needs somewhere to go.

Practice grounding and mindfulness. Watch for spirals of self‑criticism or obsession. Respond with curiosity and compassion rather than shame.

Regulate before reacting. Strong emotions don’t mean you need to act on them immediately.

And if the hyperfixation feels unmanageable or is causing real harm, reach out to a therapist. This is especially important if rejection sensitivity, depression, or anxiety are intensifying.

Final Thoughts

Hyperfixation isn’t a character flaw. It’s a brain doing what it does best—seeking stimulation, connection, and meaning. The goal isn’t to eliminate that capacity, but to work with it instead of letting it run the show.

Attraction doesn’t have to hijack your nervous system—but it does require awareness, boundaries, and self‑compassion.