Chemistry might not be felt initially but can develop later. Love at first sight, or a variation of this, predicts a good long term relationship. Chemistry can come and go, depending on other factors.

Can chemistry be built over time?

A. Chemistry can certainly develop over time. We know that because arranged marriages depend on it. However, men and women who go into arranged marriages are generally prepared to wait for those feelings to reveal themselves.

How long should you wait for chemistry to develop?

That's not to say that we should all settle for no chemistry and hope that it materializes at some point, but Trombetti encourages at least two dates before cutting someone lose in the name of chemistry. "Realize chemistry takes time to develop," says Trombetti. "Don't mistake it. It's not an immediate rush.