What does this mean?? >3's

[Remudamom]

or maybe >3s?

I am too old for college son's face book. A friend of his uses this when she really likes something I think, in this case a puppy son and his housemates are fostering.

[st_claire]

<3 is a heart, but I don't know what >3 is.

[Karenciavo]

are you sure it wasn't <3
That's the symbol of a heart and means love it.