Character flaw

I just realized I don't know how to say no. I will rather put up with something I don't like and convince myself that its not that bad than possibly hurt someone or inconvenience someone else.

Why did I let things go so far with Twenty3?. I thought that saying no would make our group dynamic uncomfortable, so it was easier to make out with him than make things awkward. And why did I let things go so far with Bree? even though I knew we didn't have that much chemistry? Because I didn't want to hurt her.

Why am I letting things with Audrey go so far? --by the way, Audry is the young girl I went to an almost illegal date with. Because I'm bored, and because I feel bad for telling her, after this whole week of flirting, that we really don't have anything in common.

I don't know how to say no because by the time I realize I don't want it anymore, I've already invested so much in the "relationship" that I feel responsible, I feel I owe them another date, or more time together. And the problem is that I like investing time in people, I like the flirting, the suggestiveness, the wondering. I like the holding of hands, the hand at their backs, the first kiss. I like wondering what they'll be like under the layers of clothes, discovering their curves, and those things that make women so attractive for me. And I like sex. I can't pretend I don't, even when its completely one sided I enjoy it. I enjoy making them feel good, listening to the noises they make, seeing their faces.

So it seems that the level of enjoyment I get out all of this is confused for personal interest and "feelings". It seems it makes me a "good person". But no, I'm sorry, I'm selfish, and I like to be able to fuck 2 people the same day, and I don't want to tell you where I am, or with whom. I don't want to know how your day was, but I may want to know why you have that tattoo on your back. You and I went on a date and/or maybe we had sex against a tree, it could have been awesome, or terrible, and it might have not worked out... whatever, it doesn't mean its the end of the world. And if I do see you again, I'm not going to be rude, and I expect the same from you. Got it?

Except, if you're The Girl. Because if you are, then you think the exact same way as me on this topic. And you're okay with it. We're also aware that there are feelings involved, we just don't know how to deal with them.