There's an easy test to see how butt-friendly she is. It goes like this: If you put your hand near her like you are going to put your finger in, she will either squirm away from you or she will let you do it. If she squirms, you need to talk about it (or do an extremely good job convincing her "nonverbally"). The same rule applies for licking her if you are in the vicinity, so feel free to wander further if her body language says it's ok. This works best if she is lying on her front so you have full access to her from behind. If she lets you or pushes you nearer, you can assume she likes it, so proceed with your play. Fetishes: If you happen to have a fetish, introducing it to your new girl is a big deal. You don't know how she will react and you obviously don't want to risk rejection of something that is such a big part of your sexuality. It would be wise to wait for a good few months until you can figure out what she might think. What your fetish is also plays a large part. If your carnal obsessions center on feet and she doesn't mind them being adored, no problem. If, on the other hand, you have a sexual connection with citrus fruits, you may have a bit of explaining to do. Conversation will determine a lot in this situation. How she talks about fetishes will show her level of understanding of the subject, so if she makes fun of people who have them, she may not react well to yours. Under these circumstances, it is best to wait until you have a solid relationship before introducing your sexual kink. If she seems open-minded and you feel comfortable, talk to her when you feel the time is right. Treat this topic with respect, and hopefully she will too.