You said that his family are saying that he will never remarry? Thing is, you don't know what he was like when he split from his ex, he might have fallen apart and "vowed" not to go down that road again. It just might be that his aunt and his mum are repeating what he said - before he met you of course.

And perhaps because of what he may have said, he may be nervous of telling his family that he is going down this road again (embarrassed). Perhap his mother, being a loving mother, would not like to see him hurt again and hence for her acting the way she is.

I don't know the answer. The only way to find out is for him to get his backside in gear and for him to tell his family. After a time, perhaps, to put your own curiousity at bay, ask your MIL2B why she said he wouldn't remarry?

Best of luck

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Ah those were the days!