Guy's Behavior

I brought up the fact the my boyfriend seemed emotionally attached to his best friend (ex) and he stopped mentioning her?

Ex boyfriend that I'm working on things with, seemed emotionally attached to his best friend, talked to her damn near everyday, heard him even say "I love you too" in reply to her saying it when she told him to have fun and he left with me in my car.

After giving things some time and thinking about it and observing him, I brought up his closeness to her in which he lied and said he doesn't talk to her that much.

Yet he's stopped mentioning her at all compared to how he used to which was all the time. Wed do something and he'd tell his friend and then tell me "my friend said..." I felt like some things were inappropriate between them for him to be in a relationship and still doing, not the example mentioned. If it was me he'd feel the same so I deserve the same respect.

So now he's being sneaky about his communication with her which is worse than the main issue. The only issue I had was with his lack of boundaries with her otherwise I was fine with them talking and stuff.
I brought up the fact the my boyfriend seemed emotionally attached to his best friend (ex) and he stopped mentioning her?
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