AITA for having my ex-wife pick up my new wife from the airport instead of me?

Let me explain my whole situation, I’ll get to the point soon enough. I got married young, my first wife was awesome and we were in love until I was in my 40s. We were happily married for years until she got involved in church and became a completely different person. The church was against condoms and she started conceiving and birthing like it was her job; by the time I was 50, we had 8 kids. I was already struggling to provide for them, but she wanted more. I was at my wits end with her and I made the impulsive decision to leave her. The kids stayed with her and the divorce was settled. <br><br>After the divorce, I moved to a different part of the country for a better job opportunity. I met someone on a dating app a year ago, we have been dating for months. She is a very kind woman who is on the same wavelength as me. We were planning a trip for her to come visit me. I’m not in the best of health (I have heart disease), and I have a tough time flying as I would have to stop everybody from using the washrooms so I can be the first person to pee. I’m not joking. <br><br>Anyway, we were planning to fly down to see me when my ex-wife called me and asked if I was still seeing that woman. I confirmed and she said she isn’t going to let have her ‘influence’ our kids. I was like WTF? And then she said that she could come but only if she was willing to stay with her for the whole trip and observe her. I was like, hell no? But then my ex said something that made my mind work overtime: <br><br>‘Why don’t you ask your current wife to stay with me and my family for the week? It would make me feel better’. <br><br>I’ll admit, I wasn’t the best husband and it was my fault the marriage failed. She probably wanted revenge and I figured I could meet her more than halfway. So I called my GF and told her what my ex said. My GF was like ‘Is she nuts??’ and I totally agreed but then something just clicked for me. I realized that my GF was the guest and my ex was the host. <br><br>I basically told my GF, she has to do what she was told. To my surprise, my GF was curt and said ‘fine.’ Over the next few days, my GF was quiet and not talking to me. I was a little confused and asked her if she’s alright. She was like ‘You made me stay with your ex and her loser boyfriend and his loser friends, they made me break my fasts early, they made me pray when they prayed, they made me eat with them at their table, they made me clean the table after I ate, they made me bathe my cousin’s kids, they made me cook dinner for the family, they knocked on my door at 4am to go pray with them, they made me pretend my period didn’t exist for a week. No, I am not alright’. <br><br>I didn’t know any of this could have happened. All I knew was the itinerary was for her to stay for a week, spend time with the kids and then she could fly here and meet me. I didn’t even know they had a loser boyfriend living with them. One of my sons called me yesterday and I asked him what happened and he said ‘mom told her to do this and that’ but I could hear the GF screaming in the background and telling my son to hang up. <br><br>I feel like an asshole. Yes, I Sullivan my GF around but my ex did this on purpose. I don’t know what to do. I’m just after realizing that I’m an asshole and I’m panicking.