I saw my ex today and I ignored him while he tried to get my attention.?

I went to Wal-Mart today to get rice crackers and origami paper. When I got there I was staring at the local rice crackers sections thinking whether I should get those and I had a feeling someone was looking at me. Well I turned away and looked around for the ones I wanted, still at the same aisle and when I turned around to go back to to the other aisle I ped, I saw on my right walking was my ex and I felt that looking feeling and I looked at him and I avoided him by making a detour. I know he saw me because I think he followed me when he saw me when I entered the store but I wonder if he realized that I avoided him. I still like him and I was scared to talk to him because I didn't feel pretty without makeup and I had bad hair. How do you think he felt that he knows I avoided him? We still talk sometimes, he still lust after me. He greeted me a Happy Vday text and the last text he sent me was him being thankful I care for him.