Break up

Kalysta
So I've been wanting to breakup with my boyfriend for about a month now. I thought the feelings would go away but they havent. I am going on a cruise with him and his family starting tomorrow for a few weeks, then it's the holiday season, then in early January he's going TDY (we are both military, it means he's going to another base for a small period of time). I don't know when would be a better time to break up?