Your friends know you best. When they don't like your partner, it hurts. You want everyone to get along, but that's not always possible.
Listen to their concerns. They might see something you've missed. But also remember - they're biased toward protecting you. Have an honest conversation and weigh their feedback against what you know about your partner.
Finding Balance
You shouldn't have to choose, but sometimes you do. If your partner makes you happy and treats you well, that's what matters most. Friends can come around, or you might need to create space between certain friendships and your relationship.