What's wrong with me?

I don't feel in love with my partner. It's almost our first year anniversary. While I do love him in a friend kinda way, I don't feel any attraction or compatibility anymore. Some background We both met in a trade school on grindr. We got together and it was fun and we constantly saw each other at lunch after school and we got along. At that time I was (maybe still am) Going through a bear phase. He's no 10 but he isn't unattractive either. No one at school liked him only a select few because he doesn't have what he calls a "filter" he says things plainly and crudely alot and hit on alot of straight people when he knew they were straight. Now I understood him and his humor and got along really well and I made him behave a bit but I'm getting off topic (idk I've never written about stuff like this before) He had the opportunity to leave and get a job or stay at school. He asked me and I told him to go so he could grow in life. Thus began the dreaded long distance relationship. We had our first date in November and he left before Christmas. We talked and since I had a really high sex drive we discussed an open relationship so that way we both could play while away. We set up rules and that was ok. They changed over the course of time and got a bit more restricted but that's fine. What wasn't fine is that when I traveled up to meet him recently and stay at his place for the weekend I felt more distant than ever. I felt like I was single and visiting an old fwb. And it sunk in that I didn't feel like I did when I first met him. And there have been problems along that way the contributed to these feelings such as how he talks to his family (super vulgar and offensive but apparently that's how they talk normally to each other ) how he teases alot. At first it was playful and funny but when it got constant I communicated it to him how I felt about it he didn't change. Idk I just feel really bad. We made up futures of us together how I was gonna build our house and how we were gonna own land and how we would do it. How we were gonna save up and go vacationing and just dreams and aspirations. But I can't help the dullness I am feeling. My words feel empty when I tell him I love him. And then our anniversary is coming up and we were both going to get each other a video game that we really wanted preordered. His Kingdom Hearts 3 and My Fallout 4. But I want to be apart now. I feel bad because he is working 2 shifts to save up his funds and pay for his part of his rent (his 2 brothers live with him and they set up am arrangement to pay 1/3 of their lease) and I'm here saving whatever money I can get either working for my dad on the weekends and earning money at school. I'm not sure where I'm going with this now. I just need help. I want to break up with him but I don't know how to do it. Also I'm leaving the state a week after our anniversary to Florida. I'll be learning after trade in Solar Panel installation. But yeah idk. Help please?