Invest time in seeing eye-to-eye. Get your relationship to a point where she doesn’t have to question your loyalty 🙂
How? Tell her what she means to you, in every possible way/aspect. Ask yourself how long will she be my girlfriend, how long do I intend to have her, this will probably be forever or a long f_____ time 🙂
Keep in mind “if you don’t tell her, she doesn’t know” and remember that quote, because it applies for everyone and everything.
If you have good intentions with her or bad, how is she supposed to know? Well, by building mutual and very True trust. A relationship SHOULD have that you don’t have to question each others trust or loyalty, if you do you still got things to explain and trust to gain.

So tell her what she means to you right now, within in a year and in your whole lifetime. Tell her what you’re prepared to do to be with her, trust me this is what some people need to be told.. and never get it heard.

“If you don’t tell her, she doesn’t know”