Hello, Aellyce,
I, too, am late in catching up.
"First do no harm" jumped out at me. I think that applies to you as much as anyone, my friend. Be careful. In the past, the relationship into which you relapsed -- a great definition, by the way -- brought you great sorrow.
I wish I knew what else to say. My own love life has not exactly been a series of ringing successes.
Just be careful. Take good care of yourself.
And relish your memories from Mexico. I, too, have truly enjoyed diving there and enjoying the undersea world! Plus, it's just so nice to get into sun and saltwater and warm breezes during this time of year!