The celebrity duo, both 28, has been spending a lot of quality time together and even rang in 2017 together with Powell's family in Texas, reported E! Online.
"They have a similar group of friends and have been seeing each other on the low for a little while," a source said.
"Glen really likes Nina. She is completely his type of girl. They know and have met each other's families. Glen is a very family oriented guy and Nina loves that about him."
"The Vampire Diaries" alum and Powell attended a Golden Globes after-party together, before he came to the LA premiere of Dobrev's new movie "XXX: Return of Xander Cage" a couple of weeks later.
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