Left out

Recently my friends have just been leaving me out. I usually find out that they are hanging on social media. I've brought it up to them and they just give me excuses like " I didn't think you wanted to come". It's kind of turning into a regular thing and it makes me feel shitty and they know it does because we talked about it. It really is starting to feel like the dont like me but they don't really want to cut me loose officially. So now I'm just here, waiting to see if my friends want to be my friend.