Had sex, now feeling insecure?

You say you didn't have sex with him because he's losing interest, so why did you? What is it about your bored boyfriend that made you so keen to have sex with him all of a sudden? You should cut your losses and run. There is nothing you can do about having given him your virginity, but at least you can stop surrendering your body to a guy who just doesn't like you very much. It sounds a lot like he knew you were a virgin and was hanging around till he got you to give that up, as it's a huge ego boost for guys, and something they can boast about to their friends. Either that, or he liked you quite a lot at first, but then got tired of you, as can happen, but, when you offered him sex, well, he wasn't going to turn that down since you were offering, but it didn't change his feelings at all. He just doesn't like you all that much. He did, time went on, he liked you less, and now he's pretty much finished with you. Break up with him, and find a guy who really likes you.