Mistakes Are Only Made Once, It's on Purpose Thereafter

One of my friends posted something online a few days ago about how people don't make mistakes. I beg to differ but I understand where she's coming from. I do think people make mistakes, such as using salt instead of sugar, or vice versa. However, she was referring to more serious things, like cheating on people, causing a car accident, or something of that nature. I agree with her in this aspect, for the most part. Take for instance, my relationship with Antonio. I keep wondering if I've made a mistake by being with him but I knew what I was doing when I got into this relationship, or at least I thought I did. I should have seen the little things. I keep telling myself that he wanted to be with me and that he used to be so caring and loving but really, I think I was imagining it. For instance, if I couldn't find him, he'd come up with an excuse as to why he wasn't answering the phone. It took him over a month to sleep with me because I really don't think he wanted to. I think I kind of talked him into it or persuaded him by doing......other things. Either way, there are plenty of things that happened or didn't happen rather, that should have showed me that he wasn't interested in the beginning. I'm still unsure of why he moved in. I'm unsure of why he stayed. I want to believe it's because he loves me but in the last two years, he's managed to get tons of money out of me, whether it was in the form of taking off my stuff as scrap, selling good stuff we had or flat out receiving money from me. He also uses my vehicles with my gas money and I pay for all the maintenance. 

He wants me to trust him. He wants me to stop snooping through the phone bills and investigating phone calls and texts. It's hard to trust him when he tells me he's not talking to someone anymore and then there are hundreds of calls or texts on the bill. Just like with this Farrah chick. He first told me her name was Kesha. Then he said it was the one from Orangeburg. She even went along with it saying her name was Keysha (correct spelling, as she so put it). Then, when he went to court, I blocked my number and called her phone and come to find out it's the Farrah chick that another supposed Cooda Gal is constantly telling him to call. He also claims that the other name, Kim, is he same person as Farrah. Obviously I don't believe that. If you call somebody by one name all the time, then that's what you're always going to call them. However, in some messages I've seen in his phone, she's saying "call Farrah" and in others, she's saying "call Kim." Why use two different names? I also unblocked all the numbers on the line and surprise surprise, there are ALREADY three calls on the bill to or from Samara. They just couldn't wait to talk to each other again. I don't understand why you would want to talk to two women who don't want you to be with the one you're with. They clearly do not want me and Antonio together and they have had no problems telling him AND ME about how crazy I am and how we shouldn't be together, but he continues to talk to them. He wants me to trust them but he never tells me the truth about talking to them. It just pisses me off. Everyone in my life that was using me and telling me that Antonio was no good for me, I quit talking to them. I left them alone and I have nothing to do with them anymore. If I still talked to them, I'd be even more skeptical about mine and Antonio's relationship. 

I honestly don't know what to do sometimes...