Stuck

So I been talking to this guy for 2 years now( we been taking things slow we both have trust issue) and we are both finally at the point where we trust each other and starting our relationship into something serious. But today I seen one of my old crush and all the feeling came back. We always had unfinished business and sexual tension but now I’m confused a part of me wants him but I’m literally moved on or I thought so. Is it best to get rid of my old crush. I know I’m not leaving my boo for him but I hate hurting people feelings 😩🥴😪