Just watch and see what happends. If she falls for his attempts, well, to bad, then I would take it as she really didīnt have what it takes to create a family. The sooner this shows, the faster you can get on your feet to find something that has.
Apart from that, I punch his nose in on sight, if this would happen.
I think you really dont have to worry, I am pretty sure, she be the one who would be sorry at the end of the line.
A jerk like that, is not a friend.