<human>: Summarize the given text in a few sentences.

My girlfriend and I (dating for 5 months) recently lost our virginities to one another (2 months ago). We've had sex a handful of times now, but it's usually the same positions. My girlfriend doesn't really show if she's having a good time and never tells me how she likes it. It's not awkward between us about anything other than sex. When sex comes up she acts really awkward about it and sometimes just drops the conversation all together. I don't know how to start talking about sex casually? I want to try new things as well as find out what she enjoys.

how do I make my girlfriend more comfortable about discussing?
<bot>: My girlfriend gets awkward when I start talking about sex, I just want to learn what she likes...? I want to make it seem like a casual talk.