I found that if you click on the "detail" leaf and click on Breeding on the two villagers you are wanting to breed it works faster. You may have to click or move each of them on each other to get them to "go inside" several times. But dont give up.
Funny thing last night, Sunday, my husband and I went out to dinner and we had been running errands earlier. The waitress came to give us our check and I was in the middle to talking about VV to my husband. I said "we need to get home really soon cause I got to get my villagers to make some babies". She looked shocked and my husband was like, "oh she is playing a game on the computer". The look she gave was like Yeah right you freaks. HEHEHEHE