Me and my gf have known each other for several years, but we've only gone out for about 5 months. I have been interested in her since I've known her but never really came out about it. So far it's been great between us, except one thing. 3 out of 5 times we fool around, she can't keep me interested. She's gorgeous and a blast to be with, and I love the things she does to me, but it still can't keep me up. Any ideas on what we can work on?