My boyfriend tested positive on 24 november, i was in contact with on 23 november, i got tested 25 of november, should i quarantine?

Yes, please do: Extremely infectious virus. Better to protect others. The quarantine period is about 10-14 days if you are asymptomatic.

Yes: If you had contact with him for more than 15 minutes within 48 hours of when he tested positive, then you should quarantine. There is some debate on how long you need to quarantine. Previously they recommended a full 14 days, now they might change that to 7 or 10 days if you have at least 2 negative tests. Good luck during your quarantine. Remember to mask - that is what masks really do best.