User blog:Legionwrex/New Romance

Ok so I have finished my ME2 play-through but I romanced liara, so now I want to go back to one of my saves and call it off with here in the lotsb dlc. So I have two questions, first if I do call it off with her and romance tali will it count as cheating on her and if I go back to one of my saves, call it off with and romance tali, and then finish the game once again, once I import the game into ME3 will it import the version where I romanced talier which is the new version or where I romanced liara which is the old version.