Regardless of how she initially reacts, it’s important to communicate and be honest with her. While she may be upset at first, she’ll eventually come to accept it. And, in the end, it will be better for both of you if she’s honest with you and knows your sexuality upfront.
If you’re not sure how to tell her, try bringing it up casually or slowly over time. For example, ask her how she feels about people who are gay or lesbian. You can also try flirting with her to see how she reacts. If she smiles, leans in close or gives you a quick glance, that’s a good sign she’s interested.
Once you have a good idea how she’s going to react, pick a quiet place and have a conversation with her about how you feel. You can even make it more romantic and memorable by taking her to a nice restaurant or going for a walk. However, it’s not a good idea to tell her about your sexuality at the mall or at your parents’ house.
Be prepared for her initial reaction and remember that it will get better. She’ll probably cry, scream or kick you out in the beginning, but she will eventually come to terms with it. Be patient and remember that being LGBTQ is not a choice, so it’s not something you can just switch off. She will likely be happy for you in the long run.