Search Results: does this make me bisexual

So I've noticed this in EVERY relationship I've gotten into, which is quite a bit, however most of them are brief for this reason. When I get into relationships, I like being in a relationship, and truly care about who I'm with, however I don't like spending all my time with them. And I don't really care about talking about the relationship either, and when they leave whether it be a few seconds to hours, I just don't miss them, like they aren't on my mind at all times, however I always feel obligated to say "Oh yeah I missed you soo much" and stuff like that because they say stuff like that to me, and when they say it to me, I don't enjoy that either.

I even find myself when we're texting or something, I'll type "brb" or "bbl I gotta do something" just to get some time that I don't have to talk to them. And I feel terrible about it, but I just don't like the clingyness, and I feel smothered. And I try really hard to keep on the same level as them, but there are times where it's just exhausting and I fall short. Needless to say I'm far from a romantic. Like my idea of a good time together is maybe a walk, or watching a movie together or something. And on things like social media they might act so excited over the relationship where as I'm a bit more stoic I suppose, like I'm glad to be in the relationship but I see absolutely no point in plastering it all over my face book page.

And now I've got a girlfriend (I'm bisexual) whose constantly wanting to talk about our love, and stuff and I'm not sure how to reply, like she writes out paragraphs of how she feels while I just can't, I'm more of a woman of action than words to begin with, so this stuff really doesn't come easily. Does this make me terrible? Can anyone give me some tips on how to like, deal with it or something?