If I were you OP,
I would just calm down...take a deep breath, and don't even worry about it. You guys have only been dating for 3 months?? Sorry to break it to you, but that's not that long at all. Are you guys exclusive yet? Or, are you two also casually dating other people? I'm just wondering...
About a year ago, I probably would have reacted like most women and say: "
Just cut the slimy good-for-nothing bozo out of the picture for GOOD!" HAHAH!
But after reading John Gray's Mars/Venus books, and Sherry Argov's WMLB books, I have come to see that there is another solution:
Girl...just have fun without him! Don't in any way give him the impression that you were waiting by your phone to hear him call you. NO WAY!
Show him that you have a life too! Forget about him on his "holiday" or vacation...whatever you call it. Let him have his fun. If he's really interested in you, he'll come back eventually. Sometimes all men (no matter how good the woman is) need time and space to themselves. How a woman acts when he's out alone with "the boys" or on vacation, or having his "alone time" will greatly determine how he views her and if he comes back! You want him to be longing to come back to you, not running away from you. If you pursue him...he will run. It's in all men's nature.
Let him be craving for YOU! Not the other way around!
When and IF he calls you, just act like everything is fine. Don't ask him:"why didn't you call? Where were you?" No...just act happy, cool, and confident. Just say: "It's good to hear from you! Did you have fun on your trip?" I'm telling you...this is the best thing.
Acting overly pressed will only make you look desperate and insecure. You've only been dating him for 3 months, not a year...not even 6 months yet. Trust that he's being a "good boy", and that he is just out having fun. If he's cheating or doing you wrong, then trust me...that will come out eventually.
Plus, like others have mentioned...it seems like he's not really a phone person to begin with. His own good friend hasn't heard from him in a while. If he was calling everyone else under the sun except you, THEN I would be worried. But it seems like he's not calling much of anybody these days. Just let him be. Go out with your girlfriends, have fun going out and having a good time, busy yourself in a hobby you enjoy, call up your friends, etc.. Do ANYTHING except call that man! If you feel really cruel or heartless, then
MAYBE you can send him a cheery text message saying: "Just thought I'd take some time out of my busy schedule to say that I hope you're having fun!"
When he does finally call you, still act happy and receptive, but when he comes back, it wouldn't hurt to mention to him that it would have been nice to hear from him since you started to wonder if everything was okay on his trip. Just keep it light, but definitely give him the message that maybe in the future you would appreciate a call or at least a message saying that he at least got to his destination safely, or whatever.
I know this advice may sound crazy...but sometimes, you have to "play the game" with men.