Hi Kwmechelle,
Life can be very hard, isn't it? I'm 40 and single as well and it bothers me a lot. Please know you're not alone in this.
Please take a look at all the psalms in the Bible. Some of them are joyful and others are absolutely not. Life is broken and therefore has a lot of difficulties and that's the way it is. But take heart, it won't be forever!
Suicide is not a good idea. Maybe you think no-one would care, but there are always some people who would get hurt if you took your life, even if you don't know about them. Also, it's not good towards the Lord who has given you this life.
This life won't go forever. One day you'll pass away to go to the Messiah or the Messiah returns to us. Then there will be no sorrow, no tears. Since people won't marry each other in the afterlife: everyone will be single (or sort of "married" to the Lord, but the idea of being a bride of Christ is obviously not so appealing to men as it is to women

)
One day, life will be better. Just one day......, so have patience. The Lord did not promise each of us a spouse, but He did promise to come back and be with us forever! So hold on to that, Kwmechelle! Just hold on to that! Just pray for Him to come at the right time! He will!
God's Blessing!