i beleive my longterm boyfriend is cheating on me.i am pregnant, yet always had mood swings and was kinda' crazy. he left me for 2 months to party b4. i could never reach him, and when i did he wud be out with mates and laughing. he came back and 2 months later is away gain with excuses about going to mass/dentists etc. he always answers his cellphone, and is home with his parents every night.or his gay best mate. when i check dates or times of where he says he is going like funerals etc,i find them to be correct...if he is not cheating why wud he leave me evry 2 months??