[Rivière]

Do you have any way to communicate and keep in contact with your boyfriend like Facebook or by phone? If you do, if may be a good idea to ask him if he's free sometime soon so the two of you can talk things out. Communication is important in any and all relationships. If you're both unable to keep in contact the best thing you can do is wait until he returns home. It might be hard to wait it out and see what becomes of it but it's the best thing you can do until then. Once he returns home, let him settle in a little, see how he is and all the general things. Once he's settled, approach and talk to him telling him how you feel.

I know it's hard to come to terms with the fact he had relations with another girl whilst you'd broken up but you must remember there may have been a reason for it like there's reasons for everything. Has he told you how he's felt? Maybe he felt lonely and just wanted someone to talk to? Who knows? If you haven't already, ask him why he went with the girl and see what he says. Remember though that while you both were apart officially, you weren't his and nor was he yours. It may seem a little quick for him to start getting into relationships with other people but the reason behind it may have been a very good one.