I'm wondering if your girlfriend's father is MY boyfriend. His daughter is also 28. When she's around us, he's not allowed to touch me, talk to me or even be civil towards me. They rub each other's backs (she puts his hand up her shirt, and vice versa), she sits on his lap (even when we're out in public, like at a restaurant), she comes along on our dates, they're constantly on the phone with each other, and he admitted to me that he has a hard time telling me he loves me (and pretty much anyone else) but the words flow out easily with his adult daughter. To top it off, she's completely rude to me, and to any other woman that so much as even looks at him. He told me she gets mad if anyone finds him attractive. I've been dealing with this for nine years. Two weeks ago, I gave him back his engagement ring and moved out. I won't go through that anymore. I don't care who calls this "normal" and "loving" behavior. They have serious boundary issues, and I don't think either of them will have a normal relationship with another adult for the rest of their lives. They make everyone in the room uncomfortable. And no, I don't have a bad relationship with my father. I respect him. He's my father, NOT my boyfriend. Furthermore, if someone told me my dad was attractive, I would be flattered... not pissed off.