<human>: Can you give me a shortened version of the text?

Hey everyone. Every so often, when I (25m) get intimate with my girlfriend (24f), thoughts of the similarities between my girlfriend and my mom can come to mind. When this happens, I become repulsed and quickly lose the mood to have sex. It's taking a toll on our relationship and my overall sex life. In the past, I've even chosen not to date girls who looked/reminded me of my mom (e.g. similar curly hairstyle, etc.) because I was worried something like this would happen. Has anyone ever experienced this? Basically, I don't want to think about my mom when I'm with my girl, especially in the bedroom. Any help would be greatly appreciated
<bot>: Sometimes I get thoughts of the physical similarities between my girlfriend and my mom. I get grossed out/turned off and it makes sex difficult/bad :( Any help appreciated.