Should a husband/bf be able to grab his spouse whenever he wants?

Jan
This is something my boyfriend and I argue about all the time because it gets me sooo angry. Sometimes when I'm just sitting down or whatever he'll just come and put his hand down my shirt and bra to feel me up. I always yell at him and get super pissed because I feel like you are forcing yourself on someone when you do that, even if it's your spouse. Granted, we haven't had sex in a long time since the baby was born, and he doesn't see why i get mad because he says "but you're my girlfriend". But what do you guys think about grabbing your partner 'whenever and wherever'??