Shall I listen to my gut instinct or am I overthinking this?

[Instinct]

Met a guy OLD, been in a relationship for 4 months. He's changed from a very over loving/romantic person to quite sharp and abrupt within that time.

I wanted to go back and read our earlier messages on my OLD profile (I've hidden it) to confirm my thoughts to see that he's been on his this week and he has also added a new picture, he's also put the caption that he doesn't want a relationship.

As far as I knew everything was going great, should I bring this up? And if so how?

And block his sorry arse!

Always listen to your gut feelings. ALWAYS.

I'm glad to hear that you have found his true colours early on rather than two years + on.
Don't listen to any excuses he may have regarding his updated profile.

Don't contact him. He sounds like an arsehole and you deserve much much better x