What shall I do??

So me and my boyfriend of a year broke up a couple of weeks ago and were both in love with each other (it was due to other reasons why)  and we've still been talking since and having sex and stuff. We've said we're going to take it slow again and work out way back into it. 
But him and another girl kissed and he said he didn't go in for it and she did and it was just a peck not a proper French kiss thing, I've noticed he's liked girls photos on Instagram.
What do you make of this??
What should I do????

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors