Surprise unplanned betta babes... help D:

I have a heavily planted 20 gal divided tank with my male on one side and my female on the other. I went out of town a week ago and just came back today... and was shocked to find my female on my male side :shock: poor girl was hiding deep in the plants. My boyfriend insist he did nothing so maybe she jumped the divider?? After I mover her to her side I noticed in my male was staying in the corner next to a bubble nest. When I looked closer there were little white things dropping from the nest and swimming back up. I can't believe my bettas even survived! My female is big and aggressive while my male is kind of small and non aggressive. I am pretty new to betta keeping and haven't owned any other fish before these... So I have NO CLUE what I should do! DDD: