The phrase "a boyfriend who seems" is correct and usable in written English.
It can be used when describing a boyfriend's perceived qualities or behaviors that may not be fully confirmed.
Example: "She has a boyfriend who seems to be very supportive, always encouraging her in her endeavors."
Alternatives: "a boyfriend that appears" or "a boyfriend who appears to be".
THE first time you see Lena Dunham's character having sex in the new HBO series "Girls," her back is to her boyfriend, who seems to regard her as an inconveniently loquacious halfway point between partner and prop, and her concern is whether she's correctly following instructions.
And the son's sweetheart, the gorgeous, vulnerable girl next door who wants to become an actress and is thrilled to meet an honest-to-goodness famous writer (the actress's boyfriend), who seems destined to steal her fragile heart and crush her dreams.
Summoned to dinner by her clingy boyfriend Abe, who seems a little too concerned by Peggy's joshingly familiar relationship with male co-workers, our workaholic young heroine at first worries that he's going to break up with her, only to be convinced by Joan that he probably wants to propose.
She also married her boyfriend, Jack Tweed, who seems like a shifty little shit to me.
After finding a job at a fish-processing facility and a boyfriend who looks like Ronan Keating, Marie seems to have amassed all the key hallmarks of adulthood, and that's to say nothing of the thick coat of hair growing all over her body.
Elizabeth, meanwhile, is determined not to marry her boyfriend, Brett, who seems perfectly lovable, with his floppy hair and Americanized South African accent.
When she returns to Beth's apartment she is surprised to find Beth's boyfriend, Paul, who seems confused by Sarah's demeanour but does not realise that she is not Beth.
"This is not about just a lying boyfriend or a boyfriend who has cheated on you," she said.
A boyfriend who thought I was gorgeous.
