If this guy is a real friend, or really worthy of your friendship, he will call. If he is interested in you and interested in dating you, he will call.
I know I have tortured myself many times over the years waiting for calls from men, giving away all my power and thinking that the only way I was validated was through them & by the attention they paid to me. I was never satisfied, often wondering whether or not they'll call and ended up in a lot of dead-end relationships. I didn't realize it at the time, but I was often coming across as desperate and needy and I was DEFINITELY choosing men who weren't available in the way I wanted or needed them to be. It was torture waiting for that phone to ring, because I was basing all of my worthiness in his attention to me. And anytime we seek for validation outside ourselves, we always end up frustrated, confused or unfulfilled because it really has to come from within.
I have been there and done that so many times in my life, I could write a book (possibly a whole series!!!) However, I continued to create the same pattern of discontent in my life because I never really took the time to figure out me...before jumping into another relationship.
I have recently had the opportunity to experience a mutual relationship and can tell you there is a world of difference between the two. If someone really likes you, they call. If you are really okay with who you are, it doesn't matter if they call or not. Being okay with yourself and liking yourself comes first and when it does, it still stings when someone else doesn't reciprocate...but we quickly recover and see that it means there is someone better on their way. If we aren't okay with ourselves, we spend a lot of time waiting for the phone to ring, giving our power away to the other person, trying to please them, trying to 'keep' them and depending on them to make us feel better about ourselves...and that never happens.
I wish you well. From what I've read & if I understand it correctly, you are still living with your husband and barely out of your marriage. It is a time filled with a surprising number of emotions and issues to resolve. I love the way Harville Hendrix describes that when we don't resolve things from our previous relationship, we carry those same issues into the next one and they will be more in our face than ever before. I have never lived such truer words.
I hope you find peace with this relationship.