Hentai for itouch

I've met an amazing human being who I value deeply. I'm an 18 y/o male attending college and being with her has really forced me to confront my past, where I've done less than savory things. It feels so incredibly difficult to move past them and forgive myself, and I don't know the right approach. I hate the idea of a confessional where you list all past wrongdoings or misgivings or poor thoughts you've had, it's hard. She's also been incredibly accepting and forward-moving with me when I was honest with her, I just don't know how to resolve these feelings. I've told her that when I was younger I let my dog lick my penis and I took a video of my sister in the shower. When we just started dating, I got drunk at a party and was interested in another girl there. I never intended to kiss her or have sex with her or the like, but I held her hand and definitely had a possessive attitude until I became more sober and helped my friend have a chance with her.
When I was in highschool I'd consensually receive (and occasionally send) snapchats of boobs and the like, and had a jailbroken itouch through which I'd take screenshots to look back on later, without their knowledge. I've talked about everything essentially but it's hard because omitting any detail and not going over it in excruciatingly vivid manners causes me to feel like I'm lying or being disingenuous or really haven't changed or matured since those times. I feel guilty and undeserving of such a remarkable human being, and simultaneously struck with a powerful desire to move forward and become the best human I can be and anchored to the past. I understand that my life doesn't end at 18 when it's just begun, and I do not intend to stagnate. Any advice on how to proceed, how to forgive myself, anything will be much appreciated. Cheers. edit: Essentially, I feel I need to come to terms with it as myself, then share it with her. I don't know if she needs to know every sin of my life, but I have this overriding compulsion that if I don't come clean from the past, how can I restart? It's simply deception or fabricating who I am so that she doesn't know the real me. I believe she does know the real me, I believe that I am not the same person that I was, and each horrible thing has helped to shape me for the better and taught me lessons on what I shall never do again. I just don't see an end in sight. If I tell her every single thing I've ever done poorly, it seems unrealistic and irrational. The important things, I can't judge what that is. Also a consistently guilty mentality does nothing to help one live life. I feel that the way my mind works, simply confiding doesn't do much. I need substantive progress looking towards the future, for even though I told her about the sister video and that I felt guilty and deleted it (true), it feels almost like an omission to not say that I was enamored by the taboo and masturbated to it occasionally, disassociating myself from the situation then feeling terrible afterwards. Only in an extremely unhealthy mindset did I do these things, and now I cannot relate to who I was in the past. I love my sister to pieces and wish nothing but the best for her, I am not attracted to her and all I can say is it was a weird fetish phase. That being said, sweeping everything under the rug does not seem to be the correct option either. I still have an incest taboo fetish in porn, particularly hentai because other porn gets too real and the abstract idea is what appeals to me. I made a pledge not to watch porn anymore because I feel that when I am with someone special, my thoughts should be of them. Likewise, porn is just an oddity that has been with me since I was 12, and I don't like how commonplace it has become in my life. I want to feel a distinct identity as moving forward, and I want to forgive myself for the past. Help! :)