tribute from her boyfriend Justin Long: 'The best part of my day, every day

Justin Long pens heartfelt tribute to girlfriend Kate Bosworth

[{"selector":"#anim-d2863f12-81fd-4e7a-bc92-6402c8611e81","keyframes":{"transform":["scale(1)","scale(1.15)","scale(0.985)","scale(1)"],"offset":[0,0.33,0.66,1]},"delay":0,"duration":1500,"easing":"ease-in-out","fill":"both","iterations":1}] Heart Heart Heart Heart Heart Actor Justin Long is marking his girlfriend Kate Bosworth’s 40th birthday by sharing a moving tribute to her online.

The 44-year-old captioned the post

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Long wrote, 'She is 40! She is also the best part of my day, every day - even when we're not together.'

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Loved up: Bosworth and Long met while working on a project last year and started dating officially in May

He lovingly continued

[{"selector":"#anim-308f5b21-4e5d-4c78-af7a-e5ec6968322f","keyframes":{"opacity":[0,1]},"delay":50,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-96fec0f2-c9b6-441f-a8b1-2e0eb6bc8f7c","keyframes":{"opacity":[0,1]},"delay":150,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c91b245e-aa55-4b88-b48e-3fa03531593a","keyframes":{"opacity":[0,1]},"delay":0,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] She has the best softest lips I’ve ever kissed. She loves beer and football more than I do (and I love beer and football). She is the strongest person I’ve ever known. She is the most beautiful human being I’ve ever seen.

[{"selector":"#anim-d5149eda-b482-4356-87d7-778dd35f43b8","keyframes":{"opacity":[0,1]},"delay":0,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-be39557f-3729-4761-83fa-95bc0cdcf547","keyframes":{"opacity":[0,1]},"delay":200,"duration":3000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] She has, by far, my favorite smile”. She is purely good. She will stand up to anyone who isn’t. She has true integrity and grit

The 40-year-old added,

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