Blake Lively and her beau Ryan Reynolds "want to be together forever."
The Gossip Girl beauty has been dating Ryan since October of last year.
The couple are reportedly so smitten with each other that the possibility of marriage has been discussed.
"Blake and Ryan are so in love with each other," a source told Radar Online.
"They're really cute and sweet and they're always talking about how they want to be together forever."
Although Blake, 24, is deeply committed to Ryan, 35, and can envision taking their relationship to the next level, she doesn't want to rush into a commitment like marriage.
"[Blake's] very serious [about Ryan]," the source revealed.
"I can totally see them getting married; she is different with Ryan than with any of the other guys she's ever been with."
"She's really young still and she's enjoying dating Ryan, but they're as serious as they can be and they have discussed the possibility of taking the next step together in the future when they are both ready."
The pair have a tight bond and are secure in their romance.
"Blake is perfect for Ryan," the insider continued. "She loves his family, his mom loves her and they're totally normal and down to earth, they are such a cute couple."
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