If the listener is my younger friend, I would say 그냥 약 한 번 올려보고 싶었어! ...싶었걸랑! is to saying of it in a playful way, I don't recommend you to say this one if the listener looks more serious than you think (^^; You would maybe know you can just add '요' to the end of those things to make it honorific(but still informal).