maturing is realizing that a relationship can always work out and always be fixed no matter the situation. it just takes both sides to actually want it enough, to communicate about the problems and to try to correct what you're doing that is hurting your partner.
"wanna call?" nicknames like sweetheart or darling, effort, fast replies, "sorry for replying late, i was...", "i miss you", "i'm proud of you", ...liked your story, remembering the little things, "i love your laugh", giving reassurance, eye contact, goodnight + good morning texts, pinky promises, "i love your smile", "talk to me", "i know you", and expressing feelings.