My W and I used to say ILY all the time, but since the bomb we are still hesitant to say it at all. However, I have noticed that in real tender moments, tender comments are well recepted. It seems to be better for us when its not just saying ILY when on autopilot.
If its said too much then it seems to be tipping their hand to us, which they are always reluctant to do at this point. Even when they are maybe 95% sure they are doing the right thing, that 5% seems to tell them to hold back (frustrating isn't it).