when is the right time to say i love you?

so i started to talk to his amazing guy in april and we started to see eachother in the beginning of this month. after meeting eachother the first day we have been hanging out constantly and i caught feelings for him very fast. i’m usually really careful when it comes to relationships and dating but this man is the sweetest guy i have ever met and he makes me extremely happy. He recently told me he loved me and i said it back because i truly meant it but i’m scared we said it too fast. i know we both mean it but it still makes me nervous. when do you think is a good time to say it? did i mess up by saying it??