8. He’s checking how he feels about his girlfriend by comparing her with other girls
This is a case where guys reaffirm their feelings for their girlfriend. When this happens, they are evaluating what their true feelings are. Some guys do it to reinforce their affection for their girlfriend, like “I think my girlfriend is actually pretty,” but others start to feel unsure, like “I think this other girl is actually more my type.” If your boyfriend is looking at women with wistful eyes, he might be making some cheeky comparisons.