I [f18] told the wife [f40] of my boss [m50] that he hit on me and is inappropriate but now she blames me. How do I get out of that mess?

I don't know their exact ages so I guessed a bit. I work as a secretary there for 2 years now. My boss often texted me about work related stuff like appointments and I didn't think that was weird. He then sometimes texted me personal stuff and asked me about hobbies and such too. I thought he was just being nice so I texted with him too. Sometimes he texted me at night but I only rarely answered then. Now he hit on me by literally asking me on a date. He said very inappropriate things that I don't want to mention. I decided to tell his wife as I thought she deserves to know. She talked to him and he told her I was actually the one who hit on him. Now she blames me and she thinks because of the texts we have/had an affair. The texts were never ever like that. Now I have no idea what to do. I am a bit scared she'll tell my boyfriend their lies. I do think he'd believe me but the whole situation is so weird and uncomfortable. I have no idea what to do