Conditioning betta help!!?

Okay so i have a male and a female betta in a 2 gallon tank with a divider just in case. I have had the male for about 3 or 4 months and the female i just got today. I had a female before but she died after laying her eggs. The male made a bubble nest for my last female while she was dead and now its gone. I want to breed themm really badly but how do i condition them.