You guys getting matches 🙂. Keeping jokes aside you should tell her that you are a stammerer at some stage of your relationship. Be proud that you are open about it. Also it removes the pressure of hiding it from your partner. Your profile shows your strength, your likings, your goals etc. If you feel that that stammering shows your one of these things or some achievements related to it then definitely you can. For example if you have been best speaker 2 times in toastmasters despite being a stammerer then it’s an achievement for you and to showcase to all of them. But if you are just scared about telling it and thinking it to disclose in the profile itself, then don’t.