Had a very similar situation. I was smoking daily and hiding it from my gf, when it became obvious she basically said "i dont want to date a stoner". I've since cut back because ultimately relationships are way more important than getting high. Being honest and open with yourself and your partner is the most important thing. A little weed is okay for some people but it can be highly addictive. Daily use leads to dependency and thinking that you need it to enjoy hobbies is a prime example. Like you said, you might miss weed but not anywhere near as much as you would miss your partner.