For Starters, "I Love You!" Too often in wrapping up a phone call it's hard to squeeze a clear, heartfelt "I love you!" in at the end, so why not Start the call with a Hello and as the song goes.."I just called...to say I love you" for short, "I love you." Same thing when saying hello to people in your 'love you' circle.
As it makes sense, give a hand shake or hug or pat on the back to greet with affection getting down to business about plans and people to be in touch with (about more plans.)
The last time I saw my late teen son in a friendly way was on my birthday of May 14th, 2009,