Don’t tell them that you love them too just to avoid any awkwardness afterwards. Thank them. Tell them how sweet it is and how you feel lucky to be loved by someone as nice as them.
Be honest and tell them how much you like spending time with them and that you want to see how this relationship develops
You don’t need to get married — you may want to get married, but it isn’t necessary in order to maintain a loving relationship. Proposing and getting married doesn’t prove your love for the person, either.
Affection, Love, and Sex
You will know you are marrying the right person if you are sexually compatible with one another. If the two of you view sexual intimacy differently or have vastly different libidos, your marriage relationship will suffer. The right person is someone who you like and who is your friend.