Marcus, Sophie and Charlie are talking about relationships, and Sophie is surprised to hear Marcus's revelation that the departed Angel and Sophia both liked him.

Leading up to it, Marcus explains why he doesn't go for many women, and that the girls who he likes don't like him, and the girls that like him, he's flattered but nothing would be happening.

He liked Sophia and Angel, just not in that way.

And how could he tell that liked him? Well, Sophia called him Sexy Marcus, and they'd ask him questions about previous girlfriends, and how he sees the perfect date, etc.

Yes. A sure sign someone LIKES you.