School friendships/ self esteem

[lifeSun]

DS is 5.5 years old and is particularly fond of one child in his class from 2.5 years .
Both are okay most times but the other child is not particularly fond of my son but will play when doesn't have any other option.
Other child has been saying to my child my mother say, to tell you to go away , 'I don't want to play with you' he has also used words like , you are my servant , you don't have any other friends .
I am particularly hurt my this and so is my son although he doesn't really understand what to do and always keeps gravitating to this child .
I understand it can be overwhelming for other child if someone is following him all the time and not giving space but the way this has been communicated by parents and the child to my son is very wrong.
My son often cries and says I feel hurt but I like to play with him, who should I play with.
I have tried plenty of other play dates over the years, everything goes well , my son plays with everyone but when back to school he would again gravitate towards this particular child.
My partner says , we should ignore it and let him
Navigate whilst I feel other child's parents are teaching something very wrong. I feel I should support my child.
We spoke to the class teacher and he thinks , other child likes to play with my son but can be a bit cheeky sometimes.
Is this a normal situation? Any suggestions how can we help our child . Many thanks!

My daughter had this. How I navigated it was to tell her not to play with anyone who is mean and disrespectful to her.
I spoke with the teacher and she helped my daughter to integrate with other members of the class and form new bonds.
It took a while but my daughter now had much more suitable friendships.
I don't think it would have been possible without a really good teacher though.
It was really hard on dd for a while as she was lonely but it's been worth it in the long run in terms of social skills and self esteem.

There's presumably at least 28 other kids his age in his class that he can get to know and play with. For whatever reason this child isn't being kind to him and is making it obvious that he/his mum doesn't want the 2 of them to be friends. You need to be very blunt to your ds and tell him to go and find someone else to play with. Teach him from a very young age to have some self-respect and stop moping after someone who doesn't reciprocate. The chances are that if he does this he'll find somebody he can share a mutual friendship with.