Old Friend Turned Flame went sour

Crystal
So I have this friend who is married she's been with her husband since high school like me. As a teen she was In a behavioral modification school for two and a half years and it was intense, there she met a guy and they would flirt and then lost touch. 16 years later he finds her on Facebook and they start flirting. He lives in another state and at the time he was married but then got divorced. So they start a long distance relationship she wanted to see if she was happier with him and wanted to be a little naughty. So they never actually saw eachother it was always text and sometimes phone calls. Once they planned to meet face to face one weekend and the guy stood her up. He would tell her he loves her and wants to marry her someday and all this affectionate shit but then he would never text or want to talk on the phone. They broke up a couple months ago. Now he's in town visiting his brother who just happens to live on her hometown. But he's only willing to meet her for coffee for 30 mins before he heads to the airport. 16 years of catching up and not seeing eachother and he gives her 30 mins? They were in the process of working it out and were about to get  back together a few times already. He's still in town and only 2 mikes away at his hotel and has made no effort to reach out of see her. When she told him her feelings he tried to say he was gonna suprise her and have her meet him for a romantic dinner but then her guilting him to see her made him not want to see her. Then he tells her he planned on seeing her more and wanted to but then he goes around saying he can only do coffee. I feel bad for her and don't know what to tell her. Her and this guy went through an emotional intense experience at this school. It was actually shut down for abuse so they get eachother more then his ex or her spouse could understand. She doesn't get how he was so sweet and wanting to see her and then in 3 months being treated like this. She wasn't actively looking to cheat on her husband it's just they had shared this intense past and the feelings just surfaced. What should I tell her?