Sign up. If you're exhausted after a long day, they make you dinner or give you a back rub. Do you, like, carry a toothbrush in your bag for six months? Saying "I love you" out of obligation is only going to get you into trouble down the road and will potentially hurt the person you likely do have feelings for, even if those feelings aren't exactly love. What they are telling us is that there is disparity between knowing something for certain and believing it to be true. It's probably longer than 6 months but less than It's about timing and gauging signs from your partner.
I've always imagined challenging a new partner to a countdown, at the end of which we both blurt out what we've been wanting to say for weeks:
When is the best time to say I love you? Why oversharing too soon is a bad idea
The takeaway is that there is no perfect time to say I love you and every relationship is different. Saying '"I love you'" is one of those special phrases. Make sure this person cares for you, too. Do you feel it? He had already told me he loved me, but I was too scared to say it back — I said nothing!