This goes for me in general, but I mention it here because it applies to this too. I have general affection for people I like. Such as my grandparents, or people I know online that I've talked to that share my interests, or a few friends I know IRL. It's been this way all my life. It's like an excitement, but with a sense of anxiousness about it. If I cannot reach the person because they are away, or if they just drop off contact, it turns to anxious sadness.
The thing is, when I really start to feel close to a person, a feeling like a throbbing in my heart area or just under there makes itself evident. Especially if I'm away from them for a time.
I have never had a boyfriend but I feel this way towards guys that I am pondering whether to approach about whether we'd be a good match.
Anybody else get this? Do we know what it is?