When ex calls blue

Ex-girlfriend keeps calling my boyfriend ... don't know any more (

I need your advice ...

I try to explain my problem as briefly as possible.

My boyfriend and I have officially been together for half a year. The whole thing has been going on for 1 1/2 years between us and actually everyone knew that we were together, but he didn't want to pronounce the word ... RELATIONSHIP ... for many shitty reasons. One of the biggest was his ex.

The two were together for 10 years ... a long time. But they lived together after the breakup until the day we moved in together. Separated 2-3 years and according to his statement they did not have a good relationship and only briefly talked about normal things. He said it was the worst time of his life.

My boyfriend is 38, I'm 23 and his ex is 33.
We moved in together on June 1st of this year and his ex calls at least once a week and wants something. Ohhhhh my light is broken, my internet doesn't work ... can you take the dog for a week, I'm going on vacation blah blah blah and he always starts running, does everything. He says it takes an hour, but then only answers after 2 1/2 hours and has so many stupid explanations why it took longer.

I know you don't do that and I hate it, but recently I looked into his cell phone and saw that they wrote 89 sms together. The only question is in what period ...

A few days ago we were visiting his parents. I saw her calling on his cell phone ... he was out in the garden and I didn't do anything. The next time he checked his cell phone, he wrote back and then went out into the garden and called someone. I knew he was calling her ... and I almost burst. Because that's just too often. You phone 1-2 times a week .... and I don't understand what it's about. Because I live in Finland, he is Finnish and she is Finnish ... he can tell me otherwise. I also don't understand anything about the sms.

In any case, I asked him after the phone call who it was ... he said a friend ... it was a computer thing from his work ...
I checked his cell phone the next day if it was really his boyfriend .- .. No ... it was his ex.

Well we had a huge argument ... I said that I don't believe him and if it really is as he said and it was his friend, then he can show it to me on his cell phone. He finally changed the name and showed me the phone with trembling hands ...

I thought I was crazy ... how can he be so thirty and really change his name ??? So often he had the chance to admit it and just say oh sorry ... caught ...
If he starts lying with such a small thing and there's really nothing behind it as he keeps saying, why is he doing that?
His explanation was because I am so addicted and I really want him to break off contact with her.
Which is not true ... it's his choice, but it would be best. I told him clearly that it didn't work that way.
He has to limit the contact and make it clear to her that he doesn't always jump when she wants something ...

now she called twice again, he was in the shower ... the last time it was 4 days ago ...
I do not know anymore. I am jealous and I think that what he is doing is not right.
He knows how I'm doing and he doesn't restrict contact ...