could i get some advice please?!!!

I'm in an LDR and him and I have been dating for 6 months now and no one knows about him except one of my friends who knows of him. He's an awesome guy, super attractive, genuinely in love with him and he loves me back and he's shown me that I could trust him and I've shown him my trust towards him as well. We've gained our trust and I've known him for 3 years but we recently started dating and we call every night and he's seriously the cutest to me and I've loved him since the beginning of our friendship and so has he and we finally told each other. We talk a lot and call everyday but then since school has started there's this guy that I have a lot of classes with he's not like close friends where I could tell him how I'm upset but we're friend we're we pass hw's and we have our little similarities. Recently, we've been sitting near each other and we don't do it on purpose like during my free periods, he comes to sit by me and when I try to show him something on my phone he takes my hand just a bit and moves it over and keeps it there, I don't say anything. And then sometimes he'll touch our shoes together and we won't move it knowing it's there. At a point where he had done this, I looked down and looked back at him he smiled. I got shy and looked away. Then I started day dreaming about him and a few nights ago I was sleeping and woke up because I saw him and I kissing in my dream and I couldn't stop crying because I don't love him though I think he's really sweet and attractive I just want someone here, physically. I want my boyfriend so bad. My friends are all in relationships and they're always with their boyfriends, and kissing them but I just want him so bad. I cried for hours because I felt so guilty. I don't love him, I just want my boyfriend to be here, I'm wanting him here and then our futures may not be what we hope and I'm scared I won't find someone if my boyfriend leaves would it be too late? I can't stop overthinking. I want to tell my boyfriend what's happening but I know he'd be so hurt because he's the guy that wants a girlfriend to stay with him forever and only one girl and I'm that girl but If I told him this he'd be so hurt, he would break up with me, and I don't want that. Because I really do love him. I've been staying away a bit with the guy but he's also confused about why I'm being distant. Please give me advice, be brutal with it idc just please I need advice.