<human>: Give me a shortened version of the text

My girlfriend Alexis is a huge introvert. I've really enjoyed the time that I spend with her but I'm always the one to initiate everything. While this can be a bit aggravating I'm a bit of an introvert myself so I understand where she's coming from and when we do actually do things together I have a lot of fun so I don't consider that to be much of a problem. However, I am not happy with the level of intimacy in our relationship. 

When we first started dating I attempted to initiate sex a few times and ultimately got rejected with her saying that she wasn't comfortable with that. Since then I've learned that this is her first 'serious' relationship and that she's a virgin. I've done my best to be respectful and the most intimate we get is some kissing and I stay over at her place frequently but nothing more. While I am happy to wait until she is comfortable, how do I bring up the topic without it feeling like I'm pressuring her?
<bot>: Want to be more intimate with my gf, but not sure if she's ready - she's very introverted/shy so it's unlikely that she'll bring up the topic herself. How do I approach this?