<human>: Like the title says, I've been in a relationship with this guy for a year. We love each other and hope (a couple years down the line) to get married. We have pictured a life together for some time now, and our relationship is wonderful.

However, recently there has been a bump in the road.

I am coming into a substantial amount of money as a gift from a close friend [28 M]. Part of the money, he said, is to buy a new car (I own an '87 Honda. Runs fine but....it's an '87 Honda, you know?). My friend has made it very clear that a large chunk of the money WILL go towards the new car....he is sending extra specifically for that reason. 

I told my boyfriend this, and he was immediately against the idea. He believes, since I have a car that runs, that it would be irresponsible to buy a new car with the money (he is super frugal and big on investments). He said that if I was to blow money on a car, especially in an "irresponsible way", that it would cause issues down the road. He thinks that if I were to go through with it that it would be showing my lack of responsibility in regards to money, and that that would be cause to possibly break up. He believes that spending money too quickly becomes a habit, and he CANNOT be with someone who does that. 

I don't know what to do. On one hand, I have my friend and several other people saying that it is MY choice what to do with the money, and he is being overly controlling and slightly rude by hinging a relationship on what I do with it, ESPECIALLY since my friend specifically designated some for a car. How do I go about this? What do I say to my boyfriend? Is he right, will I just be an irresponsible childish girl if I spring for the car? Or do I respect my friend's wishes?

I really don't want to lose my boyfriend, I love him very much, but if this is a deal breaker then I'm completely lost.

Provide a brief overview of the text.
<bot>: Coming into money, part of which is designated towards a car. Boyfriend is super against the idea of said car. What do I do?