My new neighbors

I'd been living alone for about five years since the passing of my wife, not Covid heart attack. So, I 56 was fairly used to being alone when I got new neighbors, both females mid-thirties, I soon worked out they were lesbians. It didn't concern me, after several months I'd become good friends with both. Then at Christmas, they invited me to Christmas dinner with them. I accepted, it's better than what I'd planned (nothing). My only child died at 21 in a work-related accident, so I was happy to spend Christmas with my new neighbors. All my long-term friends in the area had moved away for work over the years and young corporate types bought their homes not outgoing rarely spoke to me or anyone really. Except for my new neighbors who have been really friendly to me. Anyway, at the Christmas dinner they told me they were thinking of having children (one each). I didn't ask how or with who they were planning to have the children. I let people tell me what they want me to know I don't stick my nose in as they say. A couple days later they both visited me and asked me straight out to father their children. Their main reason was too many rules around IVF and possible donors they knew were overindulgent drug users and clingily. I also was alone and had no children left, they thought I might like to be a father again I wouldn't intrude too much in their lives they believed. Shocked at first but also interested, I asked how they wanted to proceed they said straight sex keep it inhouse they said the following weekend I slept with both and really enjoyed donating my sperm to them. Every weekend afterwards I repeated the donating, in early March one tested positive and two weeks later the other also tested positive. But I still get sex not as much as before but once with both, each weekend since. I've installed a gate between our house yards, I also do their yard work, as I've retired two years ago and financially comfortable. I mainly retired to keep my garden looking good, as my late wife had designed and built it and it makes happy having it look like she had left it.