What is Jack’s initial reaction to Maggie’s concern?

W: Hi, Jack, it is a long time ever since we graduated. How have you been?
M: Not very well, Maggie.
W: Why? Looks like you’re feeling very down! What happened?
M: Nothing.
W: Come on. For a man who’s feeling so down, there’re usually two reasons. Either his career is going downhill, or he has a broken heart. Since you’re so successful, it must be the other.
M: Well, you’re right. I just broke up with Jane.
W: Oh, I’m sorry. I thought you two were made for each other.
M: Well, you never know. I’m ready for a commitment and want to settle down, but she says she wants to pursue her career while she’s still young.
W: Well, you can’t blame her. It’s always difficult to choose between career and family.
M: Maybe you’re right.
W: Jack, I don’t know what to say to comfort you, but cheer up! There’s plenty of fish in the sea and you’ll find your soul mate, your perfect match!
M: Yeah, but it’s hard to forget her at the moment. You know, we were together for almost five years.
It’s really hard...