Pretty dog looking for a place to live!

So... Today my boyfriend Mario finds an American Bulldog on the street (we already have ONE) and now he thinks he is going to keep her!  Trust me, my love for animals tells me yes, but there is no time or space for ANOTHER DOG.  She is beautiful, all white with tan/fawn spots and she is sooo sweet! She gets along with our 3 dogs already! My heart melts as I imagine how cute she would look decked out in a new studded collar and leash, or maybe even a doggie tee, but NO WAY JOSE.  I have posted bulletins on MySpace and Facebook and I even contacted Paws 4 You, maybe someone can take her off our hands!  I will feel great about myself if we can find her a loving home, as long as it's not MY home, or Mario's, but he seems to think she belongs to him (or he belongs to her LOL) already!! I guess we'll see what happens....