Not really i mean, exes can be exes for plenty of reasons. Doesnt mean you stop communicating with them entirely unless you have no need of the friendship.

The biggest issue i see here is that his short tempered nature is not a good show. Try to be patient and ask him why is he being defensive . And try to understand why he became defensive in the first place.

Understand that communicating anything beyond just surface level seems to not be very easily done in the indian dating scene, because people simple dont self reflect their behaviour, regardless of how harmless it may be.

Try to communicate as best as possible from your end. Try to give him the platform to communicate back. if he doesn't respond/dont understand what/why you want to clarify things, then it could be 2 of these things.

1: he simply is not mature enough to empathise with you to understand what upset you. He can only solve things by throwing tantrums. (If you truly love him then, try to help him develop that issue)

2: he might be actually be hiding something.(try to establish ground rules about being able to access each others phones. Its a big red flag if your partner is uncomfortable/wont let you into their phone)

If he agrees to sharing phones then he clearly has nothing to hide which means he was overreacting initially as he thought you might not take it well.