Just a fuck toy?

I'm in desperate need of another perspective. I'm 46 and have started seeing someone that I adore but I have moments of feeling like nothing more than a fuck toy when he has an orgasm and neglects mine. For example last night he basically stole time with me when he and his 7 year old son were over for dinner and the kid needed a bath. He finishes, I get up to clean off a little and the next thing I know he's getting up, dressed and goes to his son. He says he wants me to orgasm every time we are together and yet because I'm normal and don't just cum at the drop of a hat, especially with his son near I seem to just have to deal. I've talked about this before but it's getting old to have the conversation and feel like I'm a second class citizen. Talking point ideas? At this point I'd like to just tie him up, finish myself off and leave him hanging so he can see how it feels because what I'm saying doesn't seem to get through. Next life I want to be a man and have a penis so I can just objectify women like they do us. Jesus. I'm a sexual being too!! I've said it's inappropriate to be having sex with his son around and he seems to just go past that and do what he wants, and he is dominant so that fits him but I may just need to shut him down entirely from this point on to get my point across.