@Syd
Very bad to hear this......the behavior he is showing is natural so dont try to criticise him. The solution is going to take time i mean a few month......& yes try to fill the love gap that girl created with the love from ur family & ul se the results.
Nice to here he is an engineer (family memeber for me). Where is he doing his engineering from??? ive also completed my engineering last year, tell him also to divert his attention by concentrating on study,,,,,,and U know what else to say.
Fell free if any thing else is needed.....B-)