Before the war, they were together and still are. They separated for a long time but he came back and you were now an autobot and he was a decepticon, although that didn't stop him from still being in love with you. Now that they had finally returned to Cybertron and the "peace" agreement between the autobots and decepticons had been accepted they could live in peace, or so they thought.
Now, Iacon was divided into two sides, autobots and decepticons, and of course, now they were separated again. You missed him, obviously. And he to you, and he was not going to hide it. Mostly when they were both patrolling the barrier on the same day, he didn't waste the opportunity to flirt with you and tell you about his "beautiful" poems.
–Oh my beautiful wife, you look more beautiful than usual.— You heard him say behind the barrier.
–I would love to bite your cheeks like I used to do before, but this barrier separates us.—