<human>: Provide a brief overview of the text.

i've been dating a guy for a few weeks, and things seem to be moving in the right direction. he seems kind, considerate and we have things in common. i met his friends & housemates at the weekend and they were all lovely. i don't want to get too excited due to past experience of rushing into relationships, so i'm trying to space out our dates and make sure i keep busy with other things. 

i'm black and he's white. while lying in bed together, he reassured me that he's aware some white men date black women because they're 'exotic', but this isn't it with him. he just likes me for who i am. he listed the black celebrities he's attracted to (3) and then went on to explain that he'd told his mother about me, mainly because the topic of girlfriends came up with her. her response was 'i didn't know you were into [n-word] girls', and then something about our future children being 'beautiful'. 

at that point, i kind of shut down because it stung quite a bit. he didn't seem to understand why i was upset by it, and reassured me that his mother 'wouldn't have meant any harm by it'. i heard the usual lines of her spending time with 'diverse' people, therefore ensuring she isn't racist. he said he'd used the n-word before, and he too, meant nothing by it. it was just a thing that was done where he's from (he's from a different european country.) he's also made subtle comments about my upbringing too - slight disbelief that i grew up in a middle class area etc. i feel like he may have his own subtle assumptions despite his liberal leanings.

i'm worried that maybe i'm making a big deal out of nothing, but it's been troubling me ever since. i know people use certain terms all the time, but the fact he couldn't see why i would potentially be hurt by the comments she made ~almost~ feels like a deal breaker. do i speak to him about it again or let it lie?
<bot>: dating a guy outside of my race, his mother used an offensive term to describe me but he didn't understand why i was upset.