Maybe I’m being too kind but I get the feeling that he wants his girlfriend back (he’s over all the sadness, wants the holidays and fun) and she’s trying to make it happen for him. Seems like she’s trying to force being happy but she’s still properly grieving.
He’s not the right person for her in this time. He doesn’t really give a shit about her, he just likes the lifestyle. If they just wanted a nice holiday together, why go to Ibiza - because he’s so desperate to be “seen”. She’d have probably just liked to have gone to Lanzarote