ellenmariobaby460.jpgCourtesy: Michael Rozman/Warner Bros.

Mario Lopez is opening up on The Ellen DeGeneres Show about fatherhood and his upcoming VH1 reality show, Mario Lopez: Saved by the Baby.

Lopez, who admits to Ellen that he wants "three or four" kids, dished about how Gia's mom Courtney is doing ... and how she feels about adding more kids into the mix. The Extra host says:

    "She's like one at a time. She's cool with that. She definitely wants them but I kind of want them right away and that's where we have our differences. I think it's cool when the brothers and sisters (are close in age.) I was raised close in age. When there is too much of a gap...I don't know, I just think it would be cooler."

Ellen even puts Mario on the spot ... asking him if he wants to propose right then and there. After he says, "No pressure. Thanks Ellen," his ladylove jokes, "Does that mean I have to say yes?"

We love a girl with a great sense of humor. Congrats, Mario!