Friend wanted a favor

I'm divorced and have 2 children who live their mother and attend the local university. I returned to my hometown after my divorce and had no plans to get married again. At 48 I've a good job able to work from home and really just wanted a peaceful life. On my return I renewed some old friendships and made several new ones as well. I became friendly with Lisa 38 single, and it was just friendship as she was more interested in her own life and wasn't wanting to marry or have relationships. But as they say time is ticking by and she finally realized she wanted a child before it was too late. So, she came to visit me and asked me to do her a great favor. Which was donating sperm for her to get pregnant, she wouldn't want any financial help from for the child and was willing to let me share in the child's upbringing. I was a little shocked at first but said OKAY and let do all the arrangements. That's when the hassles started legal hassles, the laws had been changed and many hoops and fences added to make it harder for single people to have children by IVF. So, it was easier to do it at home, I made several donations, and she didn't get pregnant. Finally, totally frustrated she asked me to fuck her to get the job done and after several nights together she got pregnant. Every test showed the babies (twins) to be healthy, I was bit shocked myself. But she was delighted, and everything was going her way for once. Then the state government put a spanner in the works, they were widening a road and bought her home by compulsory purchase order. Already 6 months pregnant and with no suitable homes available locally to buy or rent. I told she could move in with me as I had a 4-bedroom house, she could relax and have her children and find another home at her leisure. She accepted and that's how it is now the babies are due in just over a month and we're getting really.