<human>: Can you give me the gist of the text in a nutshell?

I have two close friends whom I have known since freshman year of college. Let's call them W (21 M) and C (21 F). They started dating near the end of freshman year and since then they have become increasingly joined at the hip. I used to be able to hang out with them by themselves but now it seems like I never get to hang out with just one of them.

C is easy enough to get on her own if W is out at class or at some other function (he has several hobbies outside his relationship), but whenever I want to hang out with just W, C automatically comes along. She's incredibly sensitive and has self-esteem issues, and uninviting her would probably piss her off/upset her, and thus probably set W against me. 

The thing is, W is really fun to be around when he is by himself. He cracks way more jokes, and we can talk about some mutual interests such as taxidermy/art/other vulgar things without C getting grossed out or bored with the conversation. Also, when W and I (and sometimes my fiancee) get together to play games, C either refuses to participate or sits on the sidelines making unhelpful comments or getting mad when she doesn't bother to try and understand the rules. The last time we all got together to play GURPS (a tabletop RPG), their constant bickering ruined it. 

How do I get W alone without starting a shitstorm?
<bot>: I want to hang out with my friend without his girlfriend coming over too, because said GF sometimes puts a damper on the fun.