Sex tape, anal and threesome

My boyfriend and I have been dating since December and he really wants to record us getting it on. I want to do that for him but I'm not sure if I should we only started having sex a few months ago. He also want us to have a threesome with another female im bisexual so I'd be fine with that but I can't stand to think of him with someone else other than me. He also want to try anal with me I'm not sure if I'm comfortable with that. But if it's something that will bring him pleasure I want to try. I don't know what I should do about either of these topics we've talked about the sex tape but only about the threesome a few times. Please help