My SO is an otr truck driver. I do not rethink our relationship constantly. As far as feeling like I would be fine without him because he's not around anyway...well, I know that financially I could do it myself, and I know that I would eventually move on with my life. But I would not want to do that. Even though he's not here a lot, the time we do spend together is wonderful, and the quality is enough that the quantity isn't all that important (yes, I'd like more time, but since it's not an option right now, I look at the quality). Plus, with the job he has, we can spend a lot of time on the phone together, so we talk enough that it's almost like we're together a lot.
I can see how someone would think those things, though. I think it takes an immense amount of commitment, trust, and believing that the relationship, and your SO, is worth it to make it work.
at 6:24 PM on Mar. 27, 2011