Has sex turn into something more?

So i been fwb with this guy for 5 years. Friday he took me shopping. Our relationship is kinda complicated. We fight but later come back. It's like we can't live without each other. I realized on Friday that maybe there's more. Like i feel it. When he kissed me at the store and wrap his arms around me. Also the way he looked into my eyes for a long time and our kisses. He told me he had missed me. I'm confused. More like he's confusing me. I have hurt him so much when he pisses me off but he can't let me go. And when we don't talk i just can't stop thinking about him. We know each other so well it's crazy. Guys are hard to understand.