I Think He Misses His Ex-Wife

We've been together a year and I met her today.

At first due to being in my own head I didn't pay him any attention and wanted to make sure she knew that I love her babies like my own and that I wouldn't ever do anything to get in the way of the love for their children or be messy.

I needed to use the ladies room and upon my return, I saw the way he was looking at her. It never crossed my mind, the possibility of him still having feelings for her. He NEVER made me feel like anything would ever transpire between them. When he realized I was walking back to the table, he put his head down and remained cold the rest of tonight's dinner. Whereas he held my hand and my waist when we arrived. Proud to show me off.

I don't want to get ahead of myself here... How can I be sure of what I saw before assuming he still loves her outside of the children they share? They spent a beautiful 13 years together so I know that there is a great amount of love there. I will never attempt to deny that but that look of love and admiration (I hope that's the best way to describe it) should only be shared with your SO... in my genuine opinion.

I've never gotten in the way of their co-parenting or ever offered my opinion unless he asked because I am not his wife (yet)... I recognized the look because it's the SAME look he gives me in our small moments of alone time (I have 2 children who I have full-time. Their father spends 0% time with them). It's the look he gives when we make love and right before he's about to tell me the most off the wall reason why he loves me. I'm not insecure at all and never the type to jump to conclusions but THIS has me questioning everything.

Please no harsh words. I am having a difficult time processing this all as it is.

Thank you.