Have a LTR going on for the last two months. Known her for only 5 tho.

We are originally both from different European countries, and due to some circumstances both me and her have to return to our home countries. She gets pretty emotional when the thought of not seeing me anymore so often comes up. Sex is good, I enjoy the dates and doing fun stuff together. She asked me if I would ever be okay with having a LDR with her, and try to make it work. I hesitated, but told her that we can try it. I know LDRs don't work, unless you're ok with both of you cheating on each others.

I want to get some advice on how to do some damage-control. I am leaving in a week, and think about having the 'talk' on the last day of me being here. Either be real about it, and tell her that this wont work out, and that we can just text each other now or then, and maybe once in a few months meet up for weekends for travelling and hot sex. Or I can do the mean thing, and tell her that I don't trust her being faithful in LDR, check her phone and find if she's texting with other dudes and just break it off because of this.

Your thoughts?