How you know it is right for you is something that only you can determine. How to cope with it is a part of what to consider before saying yes. Do bear in mind that even if this person is in the Reserves or Guard they can be called away at a moment's notice, even if its not to go to war often they are called upon for response to natural disasters and the like so there is a possibility that they will be away and in danger for extended periods of time. I am assuming by the nature of your question that this is something with the potential to become a serious relationship, not something 'just for fun' or the like. If I am correct on that, you really need to examine yourself deeply and consider the things above. Are you really willing to accept that you may be alone for extended periods of time? Are BOTH of you willing and able to remain loyal to one another during those absences? Lastly, the reality of just what it is this prospective partner does is something to consider, you have to accept the very real possibility one day they won't be coming back. Or, if they do come back, the possibility of them being severely damaged (psychologically or physically) is something to consider. I'm not trying to scare you away from it, just trying to give you a feel for the things you may have to deal with. Many people like the idea of a man (or woman) in uniform because it tends to represent deep, real commitment. That same commitment can have a poor affect on your relationship if both of you are not accepting of the realities of your relationship from the start.