There are all kinds of reasons why family or friends may not initially like a significant other.
"It's not infrequent that a couple enters therapy because their family isn't accepting of their fiancé, maybe because of racial differences, culture differences, ethnicity, faith, socioeconomic status and even educational attainment," said Chicago-based therapist Robyne Howard.
Perhaps the beginning of the relationship was rocky, and that's what people remember.
"They're not really tracking the way the relationship improved," said Elizabeth Sloan, a marriage and family therapist in Maryland. "First impressions can actually follow the fiancé around, and that can be really hard to correct, especially when there isn't a lot of time to get to know the fiancé."
And when families live in different areas, fewer encounters can make it difficult for all parties to get to know each other.
Sometimes, resistance might have nothing to do with your partner in the first place. Perhaps people bonded with an ex or had something different in mind.
"The fiancé may be perfectly fine, but the other friends and family aren't ready for a new person," Sloan said. "Maybe they had their hearts set on a different mate."
The therapists caution that some concerns warrant a conversation, for example, issues like alcohol abuse or disrespect toward women.