3weeks in -changing tides

So I told him that I didn’t want sex before marriage. He was totally cool with it and said well as long as I get more back rubs 😂 He’s very kind and gets along really well with my family. He hadn’t up front told he that he loves me but has made it pretty clear with his body. I really need that phrase though. Am I being impulsive ? Should I tell him I love him first?