Ladies can I get your opinion?

I know social media shouldn’t mean much but sometimes I question things. This guy I am talking to I noticed he Loves everything this one female posts on her Facebook. If it’s a picture he’s hearting it, if she posts a status he’s hearting it. I happened to get a friend request from her and I asked him this and this was his response... my thing is if you’re interested in me then why don’t you like anything I post or write? Is this a red flag? Then he also has seen her twice in person..