I can understand how you feel. It's normal to feel, am I good enough for him. You are good enough for him I'm sure. Men like to look at other women. I'm sure it's just a fantasy. If he wants to go let him. Its his decision. But, I would let him know its ok with you if he really wants to go but make sure you also tell him you will not like it. So, don't make a big deal about it and just tell him how you feel. Maybe after he goes and spends all that money he will realize he should be spending it on you.