bf and his ex both downloaded snapchat the same day. coincidence?

[Tea Leaf]

It is possible that they are still talking on snapchat. You could ask him about it but if he is flirting with her over snapchat he might deny his contact with her. If you get a chance to look on his phone, you could looks at his snapchat history.

If you haven't already, you could download snapchat and add your boyfriend. You will be able to tap his name and see the top 3 people he snapchats the most.

One more option (this again is if you have snapchat and have added your bf), if you are able to get hold of your boyfriends phone without him being there, you can go into his snapchat and tap your name. Then tap 'rename' and put it as the other girls and then delete the other girls actual snapchat from his contacts. This way, any snaps that he is meant to send to her will be sent to you.

I personally think if he cheated on you, you should break up with him because you deserve better but I hope this helps anyway