Western the thing is if he was spending ALL his free time with you, then yes you probably would seem like a jealous harpy. BUT you don't see much of him (for one reason and another) as it is, therefore he should realise its a bit of a kick in the teeth when he goes off and spends time with her. So yes definitely speak to him about it. And also arrange to do something together when she visits.
Pom werent you having second thoughts re Mr Irish anyway though? The phone thing sounds as though it mightnt be 100% true, esp if he was showing as on whatsapp (and if he could get on there from his laptop or whatever then why not message you?)...you could give him another chance of course, and see what happens, but if you're not that sure anyway, maybe its not worth it?
Can I just have a very quick (and ridiculously narcissistic and self indulgent) whinge? I apologise in advance!
Now of course this doesn't actually matter because I would far rather have C although whether that will happen is anyones guess BUT why is it that various blokes I've been interested in over the last year or so, all of whom binned me off in one way or another, are now in relationships with women who are honestly (and I promise I'm not overly flattering myself here, ) nowhere near as attractive as me?! I always assumed I wasn't quite pretty enough for any of them, clearly that wasn't it at all! was obviously my terrible personality instead