There are SO many reasons to be nervous around a girlfriend! Some are fairly common but others might be signals suggesting further consideration. Here are some possibilities: (1) General sexual tension: I want more and she doesn't, or she wants go further than I do, or we both want more but have reasons to refrain. (That seems fairly normal to me, and the two of you can probably figure it out over time.) (2) I'm afraid she won't like me if she gets to know the real me. (Hmmm, could be some lack of confidence in your own wonderfulness, something to work on perhaps?) (3) I'm afraid she's going to get mad at me again if I keep screwing up. (Mmm, does she get angry often? if yes, this may say a LOT about her, much more than it says about you.); (4) I'm afraid she'll criticize me or make fun of me. (Geez, if she criticizes, judges and mocks a lot, perhaps some rethinking of the relationship might be good, but, hmmm, also consider whether you're extra-sensitive, a possibility to discuss with a 7 Cups Listener perhaps); (5) I'm afraid she's going to leave me. (This is a tough one, as you may reading the signs correctly that she's no longer in love, but maybe you have a heightened fear of rejection and abandonment? so it's a good idea to talk with a listener or other objective person); (6) I started dating her very recently and we don't know each other well. (If it's early days, a little nervousness is expectable as you become more familiar with each other--give it some time and then re-assess). For me, a test of a great relationship is that the other person makes me feel so good about myself! When I walk away, I'm not just thinking what a great person they are, I'm feeling more confident and better looking all around! :) If a girlfriend has been with you for a while, and you're still nervous around her, ask yourself whether she's truly good for you. When we develop real love, the other person makes us feel safe and warm and happy.