Wow Portia! First, congratulations on your $2 win.. LOL I'm sure MizJ's h could tell you how to turn that $2 into hundreds with whatever his new fangled way is to beat the casino.
I get what you're saying about being wary. It's been many months since you've heard from him, right? After reading all of the stories here nothing that a mlcer does surprises me. It's possible that he's moving along his journey and wants to reconnect or it may be as you suggested. I'm an optimist so I'm thinking that he may be coming around a bit.
Does his text give you any idea why he's contacting you? Was it the generic, "hi, how have you been" type of text or something more personal? I am not one to second guess an mlcer but if there are clues in the text, you may be able to get a feel for where is on his journey.
If you are fully prepared for whatever he has to say, then definitely respond. If not, let it go for a few days and see if he contacts you again. If it's important you will hear from him. Just my $.02. I've only been at this for a short time. I'm sure that the sages here will be along soon to give you a more "seasoned" perspective.
I'll be here for a little while if you need someone to talk to. My h came by tonight for dinner and I'm in processing the notes I took on my T2 clipboard!
Me:57H:62 M:34T:35 2S,2D (grown nlah) BD:09/2012 visits M ow EA/PA?:10/2012 H moves out 06/2013
"Do not let the behavior of others destroy your inner peace." -Dalai Lama