My boyfriend (24M) did something to another girl I (24F) that he never did to me, that I know of.

I wanted to start by saying that I know this is just about a "stupid" hair tie but I am going crazy and really need some outside advice.<br><br>I have been with my boyfriend for 6 years and he is fully the love of my life. I would do anything to spend as much time as possible with him. <br><br>I have long hair and thought I lost all of my hair-ties so had asked him if I could borrow one. He has short, buzzed hair so I figured he just has a hair tie as a random accessory to wear on his wrist. <br><br>He hesitated before showing me the hair tie, but as he showed it to me I had realized that it was a hair tie that I had been looking for for months prior. It's one of my favorite hair ties and I thought I lost it and I asked him about it. He said he wore it like every other time and that he "just likes hair ties". I don't understand why it's so hard for him to just be honest and tell me that he took it because he likes it. I don't have a problem with him wearing it but he didn't have to lie to me about it. <br><br>My issue with this is that I know there is a girl that he used to hang out with, who has long hair as well. She has the same hair tie as me. I asked him if he ever wore it for her and he said no. I don't believe him and I think he only said that so I didn't get mad. This is making me go crazy. I know it's just the hair tie, but I feel like if he lied to me about that, he could lie about anything. I know we are in a relationship and I have no reason to think he would hide girls from me, I just cannot stop thinking about the fact that he lied to me about something so stupid and random. <br><br>Don't get me wrong I am the same way, I lie too. We both just don't like confrontation and will lie to get out of it, which I know is wrong. One thing that is not like us though, is that we both hate confrontation, I would have rather gotten in a big fight and called it out when he lied rather than just let it go and deal with it internally. I have never let something like this go before and I think that's why it's killing me. I usually call things out and don't let it go. <br><br>Please let me know what you think is going on and if you have any advice on how to approach him about it. <br><br>TLDR: Boyfriend lied about stealing my hair tie but I think he might have used it for another girl.