What's a proper way to answer to an "I love you" from a friend?

I want you to take in consideration gender roles, that the people are of opposite sex.
I personally never know how to answer to that, to not shift any boundaries, even though I'd like to say it back 'cause I love my friends too. Actually you know what, thats how I normally answer, by saying general stuff like, I love my friends too, or everyone loves you too, or we all love u too, or just say nothing and continue the convo about whatever we were talking about.
I just feel like there is something better to say on a personal level, from a guy to a girl and it to be seamless.