After the initial comment they always go on to chat, this guy included, so it’s a real winner.
Effectiveness – 10/10 – Tip: You probably don’t really have to love their shoes.
You could even look at this as an opportunity to figure out what's missing in your relationship.
In most cases, people seek out attention from the opposite sex when they're feeling unappreciated at home. Still, regardless of what his motives might be, you need to tell him to stop corresponding with her ASAP.
I didn’t know whether it would be better to go for a simple greeting or an attention-grabbing joke.