"Teen Mom 3" alum Alex Sekella is engaged to be married.

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The 25-year-old took to Instagram this week after saying "yes" to boyfriend Tim Peters.

Sekella shared a collage of photos of herself and Peters around their Christmas tree. She also showed off her engagement ring, which features a round center stone.

"A few days ago this incredible man asked me to be his wife. @timpeters24 #happilyeverafter," the star captioned the post.

Us Weekly said Sekella and Peters have been dating more than four years. The pair celebrated their four-year anniversary as a couple in April.

"Another year added to what I hope is many more to come. Love you Happy Anniversary. @timpeters24," Sekella captioned a collage of photos at the time.

Sekella came to fame on the MTV series "16 & Pregnant" before starring on "Teen Mom 3."

She is parent to 7-year-old daughter Arabella with her ex-boyfriend Matt McCann.

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"Today is Arabella's Big birthday. I can't believe she is 7 but it doesn't seem so long ago when this angel entered the world," the star wrote on Arabella's birthday in July.