Annoying Neighbor

I'm an easygoing guy at 56, a semi-retired widower who just works now and then, not to get bored. Financially okay, I was not interested in any relationships. My neighbor, 50, was divorced, and after we had gotten on a first-name basis started asking for loans. She always paid me back when she got her alimony payments. But it was annoying; it seemed every time I wanted to relax, she would come ask me for a loan. I thought she would stop after a while, but she didn't. Always asked if there was anything she could do for me, but also stated she had a bad back and other problems. This told me she wasn't really offering to do anything for me. I wasn't interested in any relationship with her either. So, when she next mentioned helping me out, I said I had a bad back also, but mentioned I really liked blowjobs. I expected her to refuse and stop coming over to my place. But instead, she made me the offer of blowjobs to pay off the loans she got instead of actually repaying them in cash. A $100 loan would get me 4 blowjobs, was her offer; no condom, and she would take my cum in her mouth. Didn't promise to swallow it; I accepted. Neither of us is anything special in looks, but I do actually like blowjobs. A rule was made: no new loans until the previous paid back completely by blowjobs. The agreement started in May, and she borrows $100 each month. On her asking for a loan, I get a blowjob, and then she gives me three more before she can ask to borrow again. I like the new arrangement. She really gives me a good sucking.