So me and my best friends brother have had a fling for a while now, but we have to keep it a secret because she doesn't like how he dates her friends or people her age (2 years different). But while I am at her house he received comes on to me and tells me that when she falls asleep to come in his room. So I do and we start kissing. Then he tells me he wants to have sex. ( I am on my period) so I tell him no. He then says let's do anal. I said no that I would be right back and I would have sex with him. I have NEVER had period sex before. It felt amazing. But I had to go back and sleep in the next room with my friend. I honestly just want to date him. What should I do? Help