Update. Since Mr Betta could not stay indefinit in his travel trailer, I bought a cheapish 1g tank with UG filter and light (and hood, because, well, I got little tigers prowling the house ) In this case courosity could kill the fish.
So for now the happy couple is living in separation...I don't think I will breed. I will have to see how I can upgrade accomodations.
hehehe, i loved the kill the fish line. and i have 'little tigers' too.