My boyfriend and I have been dating for 4 years. We have very open communication and can talk about anything. He told me last night that he got an erection in front of another girl. The girl was dressing sexy, with of course, a great body. I totally understand that guys get erection all the time for multiple reasons. But my boyfriend doesn't get erections easily - I should say, very rarely with other girls. This is not pornography, not sex, not a nude girl. I am already pretty open in that I let him check out girls normally when we go out and I am not oversensitive to that. But getting hard for another girl, is that over the limit? Is this normal for men? Does this mean that he had sexual thoughts/fantasies regarding this girl? This has been driving me crazy... please help.