Dating great guy but no chemistry
There are various psychological, physical and emotional symptoms of having good chemistry with another person.
It has been described as a "combination of basic psychological arousal combined with a feeling of pleasure".
You are done with players, elusive hotties, the ones who come on strong and disappear, cheaters and all-around heart-breakers. Even if you are not exactly blown away on the first date, remember to stay open. You cannot know what secret goodies are hidden in someone just by meeting them once. Go on dates that are exciting, novel and get the adrenaline pumping.
It can be described in the terms of mutual feelings - "a connection, a bond or common feeling between two people", or as a chemical process - "[it] stimulates love or sexual attraction...brain chemicals are definitely involved".