You may try telling or sending this to your girlfriend:
You are such a special person. When I think about the fact that you are in my life, I truly cannot believe how lucky I am to have found you. You are so caring, loving, and thoughtful. I know that I couldn’t have found a better person than you to live my life with. You are truly one of a kind, a diamond in the rough, a golden ticket that I am lucky to have won. I am so lucky and so grateful that you chose me.
The main thing to keep in mind is that she must be made to feel special. Be completely honest with your feelings and do not say 'I love you' if you do not mean it.
You might also want to try these simple things that are better than flowers but don’t cost a thing shared by Thedatereport.com.