The main reason some people may resist/fear vaccines are because of potential side effects that could have negative impacts on ones health. With the new COVI.D vaccines especially, many are less apt to get the vaccine since it was created in such a short amount of time with brand new technology.
look, if he doesnt cares about you now what will he do in the future and if he talks u seriously how will he make u smilr in future. if he has a flirty personality after relation or marrying with you he will talk to other gs. The rest is up to you;)