Do men notice? Do men really look into the eyes of their partner while they do something like this.
Decent men having sex with you notice your reactions because they see sex as something they do with you, not to you. Something you enjoy together, not something a woman lets them do.
Your belief that no women have ever been with men who haven't at some point physically restrained them or forced them to do something uncomfortable during sex makes me want to cry.
You sound too vulnerable to be in any kind of relationship with someone who doesn't have absolutely crystal clear understanding of, and respect for, boundaries.
He has told you out loud that if he was having sex with you and you wanted to stop, that would be overridden by his desire to keep going.
That isn't flattering. It is treating someone as a sexual service appliance.
Please don't continue to be abused. Your gut feeling is right on this. Your skin is crawling because this isn't a man you should have in your life at all. He's not a healthy person to be around.
You've been through too much to waste more time on a man who is making you feel this way and making you question whether him saying he 'can't help' sexual assault is ok or not.
It isn't ok. Decent men don't think like this at all.