Perfect example of why you don’t do a nikkah, wait for a long time, and then do a shaadi (rukhsati). What a joke. He’s been treating this like some engagement that can be broken off any time soon, and it is NOT the case. He will have to go through full divorce proceedings, and quite honestly, its only going to hurt her in the end. She will be seen as an unvirgin woman, even if she never consummated the marriage as she was in a nikkah for 4 years. **No one will believe they didn’t consummate at some point, or didn’t get at least to second base. **
Comon man, this is ridiculous. Don’t get into nikkahs when you’re not sure about things.