I guess there is an old saying, if you don't ask you don't know.

Problem with telephones is you can't see their body language so you can't see any stutters, or eyes looking down, when trying to explain.

I know it's bold, but maybe meet for coffee and let him tell you then watch his body language to see and gage better.

You can also google body language so you know what to look for, but i think seeing as you are 50/50 this may be a good thing to do so you know in your heart.

Other than that, dito on Caroline's advice.

CW