I just had to work through this and I went with a new plan where I am and transferred my EEUU/US number to google voice.
99% of your communication internationally will be in whatsapp probably.
Google voice works like an app that routes your US number to your phone (if it’s deployed in whatever destination country) and if it’s not deployed then you just use a webbrowser to access it.
You can listen to voicemail, make calls, text from it. You do lose the bubbles to IOS people but I was able to get rid of me ~$200/month verizon bill.
Understanding it’s going to be uncomfortable and not presenting it as a discussable point and having the conversation is legit the only path forward.
Don’t dwell on it. Let everyone deal with it. And they’ll all move on.
Then just be normal. Try to FaceTime or send a gift or whatever thoughtful stuff you want to do.
Normal people just kind of fall in line.