Amanda Seyfried, Justin Long Have Dog Park Date in Recent Outing

Amanda Seyfried and Justin Long's public outings continue. The very new couple stepped out once again on Aug. 27 -- this time to grab Seyfried's dog Finn some treats!

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Long, 35, and Seyfried, 27, dressed casually while running a few errands on Tuesday, Aug. 27. The smiling couple were both spotted holding smoothies when leaving a dog store and were later spotted relaxing at a Los Angeles park and hanging out with friends.

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"They had a great foundation going in so it has been going very well, they've been spending a lot of time together," a source told Us Weekly. "Justin and Finn get along very well I hear, which is very important to Amanda of course. [Long's] a big dog person, I can attest to that."

Us first broke the news in late August that the couple were dating. "Justin is super private about his relationships, [so] I'm not positive how they exactly met, but they've known each other for awhile," another source added.

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The two may be keeping their new relationship private, but Seyfried did take to social media to post a picture of her new beau. The Lovelace actress posted a funny picture of Long's head photoshopped to a llama on her Instagram account the very same day as their park outing.