Don't really think it would be a problem. Neither of us are involved with anyone else, we both understand that a "real" relationship is not feasable (his kids are almost my age), and we've even discussed that things would have to end if either of us started developing feelings or decided to pursue a relationship with someone else. Worst case scenario is that one of us would have to transfer to another site 3 miles away and I have no problem with that if it became a problem.