Spencer broke up with you 5 months ago because of "work." He kept insisting that it wasn't going to work out because of his erratic schedule and the danger that came with his job. You begged, pleaded, and even tried to compromise with him to get him to stay but he refused.
It was the worst decision he's ever made. The past 5 months of his life were the worst. He was missing you terribly. He found himself getting drunk and calling your number despite having deleted it from his phone - for once his eidetic memory was a curse. He would drive around places you two went to before. He would go to your favorite cafe in hopes of seeing you. He would have Penelope tell him if you posted on social media. He was a wreck.
Finally, he couldn't take it anymore. He was drunk, stumbling to your apartment with flowers he picked off the road, teary-eyed.