<human>: Give me the gist of the text in a nutshell

I've been dating a man for several months and it's great. He was previously engaged to a girl who dumped him, about five years ago. They share a dog, which he gets every other weekend. Early on in the relationship, he told me his ex still had a thing for him (he told me she had recently declared her love to him and regretted leaving). Because of that, he didn't want her to see him with another girl; he said she might get mad and possibly try to take the dog away from him. So he always picks up/drops off the dog alone. I've never thought twice about this, didn't bother me at all. 

 

However, a week or so ago, I happened to find out that actually,  his ex is happily married to a new guy, has been for a while. 

 

In the past few months, he's brought her up several times, saying the same things (once even said he hoped she started seeing someone so she'd move on!), all apparently bullshit. I understand if he's still working through some raw feelings from the broken engagement (even though five years is a long time..), but why lie? Why wouldn't he just never bring her up? I've never asked about her, he's initiated the conversations we've had about her. 

 

The only thing I can think is that he is the one who's still in love and has been projecting his feelings in the things he tells me. I don't know how or if I should bring it up. What do you think, reddit? I really like this guy, but I'm afraid I might be falling for someone who is still in love with his ex.
<bot>: Bf told me his ex was still in love with him, she's happily married/How (or should I even?) bring it up - is he possibly the one still in love with her?