How do I know he loves me?

Because he told you.

In my experience couples, no matter how close, find it hard to chat to each other about securing a future together. Fears that the other person will feel pressurised, or thoughts like "he doesn't own me" or issues of personal freedom, can intervene. If you feel that you can't envisage a happy future without him, try to find light-touch ways of bringing the future into the conversation. Not obsessively so; in one sense the present is all we have.

it's super bowl weekend, and he asks what you want to do?

Pick the petals off a daisy. Sure fire way of getting to the truth of the matter.

His actions. How he cares.

If your questioning it, your cautious for a reason. No?

He takes your emotions into consideration, is willing to compromise to make situations better, voices his issues while also hearing out yours, makes time for you, remembers you and things about you that are important, makes you feel wanted and secure enough to where you don't feel the need to worry about his intentions.
But if you don't know if he loves you, sometimes not knowing is knowing. Maybe you could use more time

He sacrifices at least 3 goats for you every month.

He gives you things

It is hard to say if one does this for another it is love. They are many shades of love. The question is how many shades do you need to see to be convenience it is love?

If you love him, tell him . See if he says it back.If he doesn't say it back within a few seconds, maybe ask him straight up if he loves you back. Then again wtf do I know ?