He does it because you're stupid enough to let him do it. You better hope like hell he doesn't have herpes, gonorrhea, or HIV/AIDS. And just because he tells you he doesn't have anything doesn't mean it's true, he may not have ever been tested. You should have told him that if he didn't use a condom then you weren't going to sleep with him. He's probably knocked you up, given you some disease, and going to run off leaving you with all the responsibility and complications. I'm sure you're parents are proud.
Because he's an asshole, that's why. I can't think of any other reason, seriously. You need to tell him, no condom, no sex. Period. End of sentence. Take control, girl.
Whe you say you are like 17 and he is like 25, do you mean that you are prentending to be that age?
I am 36 yet I can write like an 8 year old.
I love to get some sweet young thing hot, put the dick to her, and give her a load of cum. Some ask about a condom before things start, but when it comes time for two organs to get togather, the've forgot all about protection. I've stopped early and said, I don't have a condom on, do you want me to put one on? It's always the same, no, don't stop. I think its the nature of man to breed.
You can use the rhythm method. You only get pregnant when you ovulate at the middle of the "off" period. You can have sex for about a week after your period and the week leading up to your period without a condom. In the middle week, use one
Not being funny but the comment about the "Rhythm method" is the most ridiculous suggestion I've ever heard of. You can get pregnant even if you have sex on your period. So there is no completely safe time to have unprotected sex.
I suggest you get yourself checked out for any STIs and possibly pregnancy. And also you need to have more self respect. Tell him you're not going to have sex with him again unless he uses a condom. He's a male and males like cumming inside pussies. He's just being an irresponsible dick head.
Good luck hunny! x