In my case Stuttering never made anything worse with girls. Most girls are not like that that they would make fun of you for it. Some girls even think it’s cute. I had a few different girls and they didn’t even said anything when I had a really bad stutter. I guess they’re just accepting it. Don’t pressure your self with this it’s a part of you and it probably won’t really change in near future so don’t be a bitch and get you that gf, buddy! And btw i always kinda indirectly told them that I had a stutter mostly in the first time we Talked (phone call, FaceTime or real life) I just talk with an exaggerated stutter (I do it on purpose then) and then just say something like "damn I can’t really talk my stutter is just bad today" (say that kinda funny). If she would think it’s critical that you stutter than she would 100% say something about it in that moment or keeps talking about it. I had the luck that the girls I had didn’t really care